I think a little nudge is good but if they are not receptive to it, I don't bring it up again. Finance is very personal stuff and my some of friends/family get embarrassed/uncomfortable discussing that.
also I think it's important to not be completely out of touch since most people in my circle don't have enough money to have a safe savings/emergency stash, let alone invest into retirement. I don't want to piss people off or make them despair talking about FIRE if I know they don't have good income leftover to begin with. That's just been my experience with it, curious how you guys think about it.
Oh ok, I did not know that reputation of the site. I thought it was interesting that they mostly recommend Treasury bonds as cash reserve and I see a lot of discussion regarding that, due to inflation lately.