I didn’t get that, at all, from the GP. They just said that it’s not (in their opinion) fair to build up a user base that becomes dependent, then use that dependency as leverage.

That’s basically the Sackler Family method.

I release a bunch of code, as MIT. If someone wants to use it, fork it, sell it, whatever. Just don’t expect me to be on the hook for maintaining it, or guaranteeing it.

If I want to drastically change it, or even do something evil, like have it phone home, I could do that (I won’t). I could also change the license, going forward, as these folks did.

I’m under no obligation to maintain my stuff for any reason, other than I use it, myself, so I want it to be good.

That said, I consider myself to be an excellent steward, of really good software, that no one (except Yours Truly) uses. That’s fine with me, but I take great care of my stuff, anyway.

If I sign a contract, then that’s a different matter.