I've been here a little longer than 15 months. My advice: just smile and be polite. Arguing helps no one. If you have useful knowledge, share it and make the world better. If something is contentious, present facts and argue in good faith. Don't feed the trolls, and don't try to one-up others. Be nice, be kind, and have fun.

It's actually a simpler concern. Literally, what is that account?

Like what is it? Something that has no activity on HackerNews for 15 months, then first thing it says is rude and false.

What's false about it?

"armchair" and "no real credentials"

fine if you want to call me an "amateur cosmologist with a few credentials"

'20 weeks of emailing experts' and 'an undergraduate CS degree' do not count as 'credentials'.

fine, then call me an "amateur cosmologist"