Demanding everything be free and open source is important if you don't want independent developers to be able to make a living, and instead wish to create a world where the vast majority of software is controlled by big tech, who are the benefactors of "free" software. The less you're willing to pay people making good software, the more territory predatory ad/tracking-fueled "free" software gets. The more territory you give them, the more they're going to buy out open source software to destroy. We see this happening more and more recently, with uv, bun, vite etc. being bought out - if they can't put food on the table, they will sell out to monopolists.

I agree that I would never pay a subscription fee for any kind of system functionality, but there is a lifetime purchase option available, so there is no grounds to critique that here. Having extra payments models available in addition to a regular purchase model does not make a product worse.