Yes, it's absolutely crucial.
Do I know if it'll work? No.
But do I know that losing itch as a place for adult visual novels to call their home would be devestating for many of them? Absolutely.
A ton of people find games via itch's discovery. So even if things stay with games being shadowbanned as they are now it could absolutely wreck what little finance sustains many of these projects. WIth fewer people finding them, and thus of course fewer people who might decide to support them.