Tree yeah secondary tags don't have any nesting
Here's a one liner from the admin page:
Tags are used to categorize discussions. Primary tags are like traditional forum categories: they can be arranged in a two-level hierarchy. Secondary tags do not have hierarchy or order, and are useful for micro-categorization.
Thinking of old forum structure, I think Off Topic makes sense as a top level category, but we could maybe merge Vidya and Tabletop into something like GAMING or something generic and introduce more secondary tags. Take a look at some examples of flarum forums to see where I'm coming from:
the official flarum forum - https://discuss.flarum.org/tags
a few samples from the flarum website showcase:
https://www.devnl.nl/tags
https://www.tendigitgrid.com/tags
https://community.sunrise.ch/tags
https://community.giffgaff.com/
We could also delete Politics and Cringe, and re-create it later if the forum really takes off. It's only purpose is to be a forum space that is not viewable to people not logged in. Similar to how our cringe channel on discord requires you to react for the role