If you want to support the one you like yes. They get a larger cut of membership fees over SCs which is why membership is more valued despite being "less". YT takes 30% of the SCs and hands it to Cover, who takes 30% of the earnings and hands it to the talents.
Lets compare the lowest SC'd EN with the highest (Ina vs Mori)
Ina
>Has a total of $203,084 SC earnings
>Total amount received is $99,511.16
Mori
>Has a total of $590,397 SC earnings
>Total amount received is $289,294.53
Ina has only received a third of Mori's earnings in SCs alone. In memberships, YT doesn't take their cut due to not providing an "active service" like SCs (but still taxes the girl like 5%). So after the 5% tax and the 30% cut for Cover
Ina
>Has a total of 10810 members based on a poll and compared to scraper numbers in January
>Assuming only T1 membership and only the last three months:
>Total amount received is $107,829.75
Mori
>Has a total of 8840 members based on a poll and compared to scraper numbers in January
>Assuming only T1 membership and only the last three months:
>Total amount received is $88,179.00
What this shows is if (You) want to actually support someone, doing so through membership is the best way to do it.
For Ina, her membership fees over THREE months overtook how much she RECEIVED via SCs in her entire lifetime and are COMPARABLE in revenue to her gross SC earnings.
For Mori, her membership fees over THREE months are a third of what she she received via SCS in her entire lifetime BUT are only $2 less on average in revenue.
For another quick comparison to further hammer in this fact: Looking at the middling SC earner (Gura) who has 16050 members:
>SC earnings $453,962 ($222,441.38)
>3mo. Member earnings $160,098.75
Gura's earnings from lifetime SCs are actually LESS on average than the amount she's receiving from memberships.
>tl;dr if you want to support the girls, get a membership
Now if you're asking about the content the girls have, don't member for the content. Even if you don't hate the girl, no membership is "worth it" if you don't do it from the perspective of support. EVERYTHING can be found for free, so if you just want to see the VODs, you can do that without paying.