I keep seeing users like this, the quality of their posts is abysmal:

Can we get a captcha or something? Would that help? What else can be done? One of those things where you have to solve a little puzzle?

Are they using the API? If so, can we lock that down? Or are they simply using something like Selenium? If there is a solution, how can we force SE to implement it?

There is also a trick where you hide form elements and ensure users (even blind users) won't fill them but bots do

I really think its time to brainstorm what can be done to stop the influx of AI generated nonsense. Humans flagging them is not enough.