Because the authors don't owe you anything. You aren't giving them a single thing. They don't have to justify a thing. There is no SLA, no contract, nothing.

Feedback is fine, but there are so comments being things like "ermahgerd I paid nothing for this thing and a feature wasn't working What the actual F!". Go file an issue and fix it yourself buddy.

The feedback wasn't that though.

The worst thing they said was that it was "kinda disappointing". Which is perfectly valid. They really want to use inkscape but can't.

Users don’t owe the authors anything either. If they want to ignore longstanding complaints, they can toil in obscurity.

Heck the only reason this post made the front page of HN is because of lingering goodwill that was built up when the software was actually decent. Now that it’s regressed into uselessness, the goodwill is drying up. I, frankly, don’t have any interest in the software anymore, since it was rendered unusable. I recommend everyone steer clear of it as well.