This isn’t the controversy the title suggests. Taking the dev at their word, the measures are pretty reasonable; they asked for help maintaining, nobody stepped up, and so it needs funding somehow. You only need a license to access a release binary, and a paid license to access the Pro binary. Source code is open, compile it yourself to avoid. Some features went into the Paid tier: well,
something had to. Commenters are mostly supportive.
The dev did yank the previous releases, which wasn’t maybe the wrong choice.