I’ve been noticing the same thing too. I wonder if the state of the job market over the past couple of years has anything to do with it. More people leaving and taking their knowledge with them, meaning issues are identified/fixed at a slower pace. I know I’ve seen it happen at the company I work at, but I wonder if big tech similar issues.
If I am correct in assuming the parent is talking about puppeteer, there is a plugin[1] that claims to evade most of the methods used to detect headless browsers. I have used it recently for just that purpose, and I can say that it worked wifh minimal setup and configuration for my usecase, but I guess depending on the detection mechanisms youre evading YMMV.
The creator of that plugin does mention it is very much a cat and mouse game, just like most of the “scraping industry”