[abcd_f]

Shadow-banned rather. You are the only one who can see your own comments. Specifically, these two comments are [dead] -

https://news.ycombinator.com/item?id=5708906

https://news.ycombinator.com/item?id=5708984

Try and email pg to ask to be unbanned manually. Or wait for the mods to notice and perhaps they can do it.