That's quite the qualifier. I could not regularly pass these interviews when I had done 200+ LC problems. It's only when I got to 1000+ LC problems and had done hundreds of technical interviews that I was able to regularly pass a lot of these interviews. Even now, it still requires me to prepare a lot because how often am I really thinking about suffix tries? It's an arms race. It has happened in universities as well. An arms race between the professors trying to make sure a lot of students still fail their classes while every student needs a 4.0 to get an internship/job now.

It will get higher and higher as time goes on because we're mostly focused on H1B candidates who come from a similarly culture of grinding for exams. You can see this lifestyle is very normalized on the LC, 1point3acres, etc. Cheating is also seen as completely fine too. At this point, I feel like it's almost unfair to not be cheating due to how many people are. Your competition doesn't care about some sense of ethics (nor does the hiring manager - they cheated to get in too!).

I've met with multiple folks at FAANG and such where these practices of grinding + a little "magic" get you in. You talk to someone and they'll say, "oh yeah, I have like three guys I went to high school with in [country] in my house. Once one of us got accepted, it was easy for the rest of us."