If it is just explicit content then creators that simply have nudes will probably be okay. But anyone expecting to see Corinna Kopf taking a dick on onlyfans one day is out of luck. The creators that do have hardcore content are going to be facing a hard time. People won't want to continue paying for content that is less explicit without a significant price cut. Hard to put that genie back in the bottle.
But that's often a free censored OF so you can sub for free and pay for the content you want. Also, bare in mind that these payment services are against all erotic content, explicit or not. The site would have to become something extremely different if it wants to keep on living.
Updated, apparently nudity will be allowed in accordance with guidelines but "sexually explicit" content will be banned. Seems pretty clear though that it's the same as Pornhub, the banks said do it or we cut you off.
A lot of the cosplay girls let out a sigh in relief now. This is the "lewds not nudes" platform they wanted all along. Those who want to sell their vids can go to manyvids. I guess only pornstar wannabe girls will be the most affected by this.