I hope the situation will be changed/fixed soon, but worst case scenario is that I am forced to remove Patreon rewards (as they count as a digital service) so that Patreon pledges are purely donations.
I would declare this in advance of claiming for that month however so that people may have plenty of time to edit their pledges lower if they choose. (Although even if everyone changed to a $5 pledge, there would still be enough for the project to continue at this stage)
TL;DR It’ll hurt, but wont kill the project I believe