A public credit card processor option might help, since competition amongst large private processors isn’t able to keep fees low. Retailers and citizens could compare fees between public and private processors, see the difference when a processor doesn’t give cashback nor perks to fancy card owners.
Nationalising or replacing all private processors isn’t going to happen any time soon. Adding a public option seems more realistic.
That person’s solidarity with a colleague is remarkable and probably worth sharing, but indeed doesn’t look like a meme.
Yet I see why one would accept such post in a science-focused community. It’s hard to ignore all the attacks on science by US politicians.