Am I wasting My Time?

Hi, Not sure if this is the right place, but I started doing a few freelance writing gigs, nothing too big, just for a small online magazine. I've done some things like that before and it seemed all good. But, it took them about a year or so to get back to me. Then I got no assignments and finally got one about two weeks ago.

I put my best foot forward and......they hated it. First, they claimed it was AI as it was too polished and didn't seem like a human wrote it. I used nothing more than my brain and research. I don’t mind rewriting it if that's what it takes. But they seem to be having this AI issue with ALL the writers and instead of say, ditching the software, they want us all to rewrite everything. And the submission process took me over two hours. They have a complicated structure that I won't describe in detail for privacy reasons, but they have a fifteen minute video tutorial just explaining how to do it, and a bunch of guides you have to read and download. I was exhausted by the end of it all. And the pay is a bit below market rate. Is it even worth it?