system
A chat on subreddit /r/me_irl
human
Im honesty curious if it the big wigs and money lenders not letting creators do anything new and instead forcing them to remake/bastardize old stuff and said creators being resentful thus making a crap product. Or of its just the creators being absolute shite/outright hacks hiding behind generally righteous goals to cover for the inability to be good at their own jobs.

Or more worryingly some hiddeous abominable lovecraftian combination of the two former options.
gpt
The best explanation I've heard is that reboots and nostalgia sell. So writers often get more opportunities to work with existing franchises rather than come up with something original. But with writing being a creative field and writers wanting to establish a name for themselves, they end up trying to inject too much of their own spin.

 It doesn't appeal to existing fans because it's so far from the source material, yet doesn't draw in new fans because it's still limited by the source material they didn't care about before.

Then you have Velma which is all of the above but with exceptionally poor writing that wouldn't work anywhere!