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That sounds like they're concerned about money laundering/fraud/crime rather than the issue being crowdfunding itself. The basic statement of not being able to talk about it nor amend it is pretty much the banker code phrase for being dropped due to AML. This happens to people - including victims of crime - where Suspicious Activity Reports are sent to the Treasury by financial institutions and along with that being banned without the financial institution lawfully able to discuss the matter further with the owner of the banned account.
That would be a problem out of Stripe's control and public pressure won't solve that.
Just go straight for a payment provider which is set up to work with that kind of stuff.
Pretty sure that would not be unlike the listed competitors, particularly Throne.
A quick look at Throne shows no link to sex workers (their entire Twitter following is Twitch streamers), while OP's service follows exclusively "brats", "dominatrixes", "findoms", etc.
Not attacking OP's service though.
It doesn't take much clicking through of the linktree/beacons/etc. links in their profiles to find that many of them are sex workers; “Twitch streamers” and “sex workers” are not exactly disjoint sets.
But, yes, it looks like wishlistpage directly links on Twitter to accounts that are more in-your-face about being s/w accounts.
And lazy targeting of services used largely by sex workers might be a viable explanation of the treatment seen.