Pretty dismissive, no?
Jason Rohrer puts many (most?) of his games in the public domain, including "One Hour, One Life" [0] [1]. As far as I know, his game is pretty successful, by indie standards.
Teeworlds was at one point accepting donations, I believe [2]. Solarus has a donation page [3].
I'm sure there are many more examples that span the spectrum of payment options and cover different permutations of being online or offline.
To me, the deeper question is what are you actually purchasing? The bytes? The convenience? A slice of server resources? Developers and artists time?
I'm happy to give money to projects that I use, especially if it creates less friction than trying to go outside of the payment method and if the project is libre/free. I'm willing to pay for proprietary content but I have little expectation about what kind of service they're providing, especially they fold.
If there's a libre/free option, I would much prefer to invest in it. If there's a proprietary option that is asking for resources, I'm much less prone to give since it's clearly a transactional relationship.
[0] https://onehouronelife.com/
[1] https://github.com/jasonrohrer/OneLife/blob/master/no_copyri...