It's been explained so many times in such detail at this point that it HAS to be a prank to pretend not to understand position of most CGDCTfags.
I'm a customer looking for a specific product. Some girls sell this product, some don't. I don't harass the ones that don't, I just don't watch or pay them. If one of the girls stops selling the product, I stop watching/paying them. The product they sell is a professional fantasy, a mutual roleplay with the audience. I understand that there's an actual person behind the character, I don't care about what they do out-of-character. The bottom line is that they sell a reprise from the overly-complicated game of navigating society. They sell a version of socializing that is obviously fake, but allows you to exercise social interactions without needing to exhaust yourself on all the risks and caveats and calculations that comes from real interactions. I don't know them and they don't know me, but I can feel like I had a pleasant social experience that actually re-energizes me instead of wearing me out.
I have a social life, as much as I am comfortable. I have female friends. I have no interest in a relationship. I am extremely introverted and get worn out by constant social interaction. This allows me to dip my toes in all those social experiences without needing to dive into the deep end. I'm sure many other CGDCTfags feel the same.
All they need to do is:
1. Play a consistent character that is in some way "fictional" or "idealized", and most importantly, seems approachable. By which I mean, be professional. As in, keep your worst parts to yourself, and I as an audience member will do the same with mine. I should expect that you will keep the baggage of your personal/RM life separated from your character, and as an audience member interacting with this fantasy character, you should expect that I do the same. I want to interact with a likable ("cute") person who seems welcoming of "me". I don't want to have to put the social/mental energy into considering all the fucked up shit you may or may not be doing or dealing with, wondering if I'm going to have a good time interacting with you or if I'm going to end up with a new tragedrama, and you shouldn't want that from your audience. You should expect the audience comes to you with the intent to have a good time, and the audience should expect you are doing the same.
2. Try to uphold the rule of "doing cute things", at least to a reasonable degree, by which I mean keep This, again, is just being professional. You may be an unrepentant serial killer nymphomaniac who goes to gangbangs and sucks off every dude with ricin-laced lipstick but the character you're playing isn't and the "dimension" that character exists in doesn't have to deal with or think about those things. You may want to comment on the injustices of war and the great economic and social inequality plaguing the world, but the "dimension" your character lives in, that an audience member wants to immerse themselves in, shouldn't have any of those worries.
3. Stick to C"G"DCT and don't do casual cross-gender collabs. For starters, the streams are just uncomfortable to watch and the dynamic can feel very strongly third-wheeling. You could say to just skip those streams, but it unfortunately isn't that simple, as the presence of those male characters bleeds into the rest of the product one way or another. Shipfaggotry is the worst offender in this regard. If you could kill every shipfag in the world and guarantee that they won't be brought up on streams they aren't present on, then it might be different, but as it stands, the introduction of male characters in the same "dimension" as your character is opening a can of worms that is incredibly difficult to close again, introducing a layer of social interaction that the product is meant specifically to be a relief from. Mental energy is expended, and that's the thing I was seeking to recharge.
4. Most importantly, treat their audience with respect and understand what they're selling. This means that even if you think your audience is incredibly pathetic, as long as you're selling the CGDCT product, don't shit all over it. Even if one or two antis say something rude, feel free to clap back, but don't go around and shit all over large chunks of the rest of your audience for their feelings when they mostly kept it to themselves. This is the one that you can't really come back from once you break the kayfabe.
tl;dr - be a professional if you want this to be your profession. I really dc how you respond to this and won't be replying to you because this has been looped so many times over but it's really not that complicated.