Earlier quoted context omitted.
The ChatGPT app uses this. The puzzle I got involved moving a train, it was super confusing and ridiculous. I was imagining a non-technical user doing these, and my god. No chance.
Non technical people struggle with these alot. My mum regularly asks for help when all she's done is ignore the captcha thinking it's an advert because it stands out like a Google ad (different UI, different font, extra branding etc). At least she's learnt to automatically ignore ads, but it comes with consequence of ignoring captchas as well...
And continually changing UIs definitely don’t help.