This is absurd, I do agree with this framing... but rather than trash the company in the comments I'm curious about what people think.
Would ads be better? If JSFiddle were your project, what would you do to provide yourself a salary?
I think we've discovered that the "buy me a coffee" strategy is just that, enough to generate a little bonus income... but is it simply unreasonable to expect that a project on the web that requires ongoing maintenance can generate a reasonable income for most people?
How do we get off the enshittification treadmill? is this a corporate owner being too greedy? are we expecting too much? have our lifestyles become unsustainable?