I have adopted a feral cat. I’ve also worked with them in the past (adoption preparedness at a no-kill shelter). Bringing them indoors, getting them used to being on a lead and harness outdoors (or otherwise supervised and contained), is one of the kindest thing you can do for them. For the ones living in colonies outdoors and incapable of being re-domesticated (the ones you wouldn’t try to adopt in the first place), there’s a reason TNR - trap, neuter, return - is a thing.
Cats started associating with us all those thousands of years ago precisely because, generally speaking, they enjoy the comparatively “easy life” of living with ammenities and low stress. Perhaps we should have never encouraged their domestication in the first place; I’d leave that discussion for another day. But we’re here now and we have a responsibility.
I originally agreed with your first comment here (which you’ve changed) and I still do agree with the basic premise: that cats should not be allowed outdoors unsupervised.
But tbh, now you’re just coming across as a bit of a dick who hates cats, which I don’t abide at all.