With the average run of the mill site, forums, the problem can be side loading scripts that are doing more than just providing a feature - while many sites eventually time out quickly on a problem script, a few would not ... my solution was to put a lot of POS script sites offering nice (read deep scrape for personal information or refusal of obvious baked BS) features in the deny list, many sites then worked without issue albeit with less features - but a few did not - then they too were added to my deny list.
Agentic engineering is probably not helping since it tends to accelerate growth of LOC. I also personally think quality is an issue as well but it could be a skill issue on my end idk.