have never used tags before nostr. tags fell off in 2010 & are very cringey. although, i will say tiktok has revived them in a sense (#fyp). nostr is completely different though. i find tags like #tunestr on here endearing and find myself always using it.
if people use tags on nostr, it’s more as a categorization tool than a tool for clout. which was the whole point of tags in the first place before it got muddled with spam lovers.