So uninstall Reddit? That app is spyware at best and malware at worst.

I'm guessing you meant to respond to the sibling comment rather than mine

Yes, weirdly enough at the time there was no reply button, I thought HN comments had a maximum nested depth, but now it has a reply button and so does yours. Weird.

Ah, no worries! Replies seem to get throttled sometimes when the site detects a lot of nested replies quickly and it intentionally delays the ability to reply a bit. I've always assumed that it's intended as a way to try to mitigate threads that potentially are devolving into flamewars.