"I just wonder if this is in the backlog or what’s taking focus instead"
It's likely neither. I'm pretty sure the devs of the website just don't care about the user experience. We still don't even have an actual way to exclude tags when browsing, and that feature has been requested multiple times for years. All we have now is a shitty band-aid solution of manually adding some stuff to the URL to exclude a single tag.
Viewing post in Wait, that's how reviews work here?
I suggest using a bookmark to apply the band-aid.
If you are on Chrome, I made a button for that band-aid, to be auto-applied. And if you can run tampermonkey, I made a script to hide games by their main genre. And another script to hide individual games/developers by pressing a key.
A roadmap of features to come sure would be nice to look at. But maybe they do not want to commit, in case features have to be scratched or postponed. Last was some search optimisations and it was said, they are still working on it, but not what future changes are to be expected.