Tags in their current state haven't reached their potential and I bet that other than people clicking on tags in the "Popular search tags" section, they barely ever get used and are thus very under-leveraged given their potential!
I currently occasionally use them to sort through my queries (eg here: https://dune.com/browse/queries?user=hildobby&tags=maintenance). It would be great if searching for a keyword returned dashboards with it in their name but also dashboards with it as a tag! For example, if I want this dashboard to show up when you search for "opensea", having it as a tag is useless, only the title matters!
As a bonus, I would replace the "Popular search tags" section with a "Popular search terms" section which seems way more relevant as a suggestion!