I prefer to avoid subscriptions whenever possible because that usually means you don't "own" the software anymore that you "purchased". And as
@heisert I hate software subscriptions, regardless of fair price. If FE would change to a subscription model I'd sadly have to leave it behind, maybe, depends, sh*t, I'm kind of dependent on FE. I wouldn't like the need to search for something as good as it is.
And with a subscription model a developer likely has more obligations to deliver at least "something" regularly (e.g. in the case of Adobe a whole bucket of new bugs, vulnerabilities, ..., well and some little improvements maybe, too). In the past I thought Adobe Flash is really crappy security nightmare, now it's Adobe alone.
I can't shine with experience as I'm no developer but I bet with subscriptions the amount of bad reactions from users would rise, the expectations would be different and probably more toxic.
I haven't read the whole thread here, so it might have been discussed already. I wouldn't mind if FE were not for free but that would've excluded it from XDA as
@V0latyle pointed out. Not sure if a paid app would give fewer toxic reactions from morons who think a free app comes with life-long support and a personal dev slave. Unfortunately we live in an online world where stupids would buy a software just to complain about something and immediately cry for a refund (which an app store will likely grant them within some bounds).