Are new users allowed to comment here?

For me it looks like you made a new account to evade sanctions on your main account or to evade a former ban. The comments are probably dead because you decided to not contribute to the topic and talk about moderation in a non constructive way and in the wrong place.

You can email such questions to hn@ycombinator.com, you probably want to read https://news.ycombinator.com/newsguidelines.html while you're at it.

To my knowledge there's no prerequisite for having comments seen. Your comments all seem to be marked as [dead] - I'd guess that you triggered an anti-spam measure due to some combination of:

1. Making 4 comments in quick succession immediately after creating a new account

2. Possibly receiving downvotes/flags from other users because of the snarky/low-quality nature of those comments ("Is this European oligarchical censorship in the room with us now?", "Typical HN")

3. Possibly being a sockpuppet account. I know you're saying this is your first account, but I'm suspicious. Statements like "I shared my first comment with a friend and he said he can't see it" sound to me like potential cover for "I viewed it on my main account". Particuarly with your very first comment being a complaint about HN moderation

Could try making some more comments (ideally not on the same political argument post as your first four comments) to see if those are also deleted. Otherwise you could try contacting hn@ycombinator.com