The parent used wrong phrasing but it's real. The captchas don't become harder to solve but longer. If Google detects you're blocking trackers (or possibly cookies) it will throw at you an huge number of captchas until you give up. Imagine having to click like 12 panels of street lights, cars, bicycles, trucks, buses, etc. sometimes multiple times. This is getting out of control, really. I miss so much the Web 1.0 from 1999.