First thanks for the welcome iv technically been here a long time. But mostly keep over on the mod DB.
But i wanted to just say, this right here. Ai or not, i find a lot of the problem really is just saturation issues. AI allows for an absolute land slide of low quality and low effort work hell even high effort work has had a uptick with ai. But stuff with real effort will still rise to the top and stand the test of time assuming its unique enough or can catch a audience. Ai "slop" or human "slop" both do exist and functionally are no different if you remove the politics from the equation which to be fair is hard to do. Which is part of the issue, the solution we need is an unopinionated one, but this topic is so hot and political that getting there is not easy.
Really iv found one of the best ways to deal with the problem is a filter to allow for a cut off on total downloads, update history, how old a package is, and other metrics. None of the best ways to filter them out actually target AI alone, and attempting to target AI alone basically only results in more harm then good. Your not solving the cause, your only solving the result targeting AI directly. You need to target things that have no intended long term support or generally are unable to gather a meaningful user base. Even just segmenting off the all mod feed into its own thing, then having the default be a search and filtered page would likely help a lot.
Be it ai pictures, code, or anything else. Better filters, tag systems, black listing, etc is something i always am in favor of. People should have tools to use. But those tools should never be preset to be opinionated else you just breed a bunch of assholes who use the defaults as justification to be assholes towards others. I may use ai but i will also gladly and proudly stand at the forefront of saying a proper way to deal with low effort slop should be implemented regardless of its source.