We (and you) can never be sure why people downvote things, and whilst I think the parent commenter was well-intentioned, I think perhaps the downvotes were due to the perception of intruding on someone else's comment/subthread with promotion of one's own project.

As for your own comments, you seem to have a campaign against HN going on. Yes the HN audience can be hard to understand sometimes, but on the whole it seems easy enough to do well here if you bring a generosity of spirit, and not so well if you bring combativeness and hostility.

The guidelines [1] make it clear what we're expecting, and the first two words of the "In Comments" section are "Be kind". If you start with that then you'll be on solid ground.

Regarding your username, we can't have usernames like this, because it effectively trolls the community every time you comment. So I've banned the account for now. You're welcome to register a new account with a normal username, or email us (hn@ycombinator.com ) asking us to change the username. We'd certainly be very happy to have you post interesting comments from your experience as a retired aerospace engineer or any other life experience you no doubt have.

[1] https://news.ycombinator.com/newsguidelines.html

In recent years it seems we're getting more people who have been banned elsewhere looking for more outlets for their rage.

glad there are a few supporting comments including yours (I thought I was the only one who felt the criticism was excessive)