How did I do?

Anyway, is Nikon kinda shit? Yes, I bought dead Nikon 1 J3, tried fixing it. At first I was kind of frustrated at overall design, since it wasn't really obvious how to disassemble, but whatever. I found the fault (blown backlight fuse), and I was happy. Then I tried to fix a lens which was absolutely horrible failure as plastics they used are so brittle in attempts to figure out of aperture gear is broken, i broke aperture with no force what so ever. Oh, and chink whoever assembled it did fuck up with flex cable for something and it was broken too at bend point, but i didn't get to fix it.
I said ok, whatever, no lens, will try pinhole mode. So I've put in good working SD card. It said its bad. I tired again, and it only worked if you press hard on the SD card. Okay, solder joint issue? Let's see. I reflowed solder joints of the card slot, same shit. In the end i disassembled shit so many times it was getting more and more fucking angry. Last drop was me blowing backlight fuse again. So i fixed that. This time i didnt even remove flux... And fucking SD card still didn't work, so it was the last fucking drop, and i just went all in with hammer therapy.
Nothing in this fucking camera was good. Shutter button feel? Awful. PCB layout? retarded. How shit comes together - even more retarded. Combine that with no service manual and lenses that all fail because they are dogshit design too - worst fucking experience ever. That have beaten the HP printer, other device that got hammer therapy.