None of the instances listed have anything like that going on. I believe that all listed instances use either https://www.cloudflare.com/products/turnstile/, https://anubis.techaro.lol/, https://git.miningtcup.me/MiningTcup/dogwaf (made by me), or nothing at all. I recommend against using instances not listed unless you know the host because there are reasons for them to not be listed. I won't elaborate on the reasons for some major instances not being on the list as I want to keep my HN account.
Yes, I entered via nittr.tr, chose one of the instances, got a robot turnstile.
I was on a Windows computer where I didn't care and clicked the turnstile. It was a fake turnstile that redirected to exploit URLs of rough form 1212-12w31762.spammy-url.lol/10919023w71238123ww8128z1287z18178-12w1287wz62178612873ww682183w12.
The browser blocked them. I don't remember which instance it was.
Another instance had a completely broken search feature. Nothing had the quality of the real xcancel.com or nitter.net.