yeah I think it would be good to do more. hashtags are clunky and an eyesore, and I would love to see better support of them that mitigates this. But currently they are the main way to signal discoverability on the fediverse. And posts on kbin are (usually) made with the intention that the public can interact with them.
One thing I would like to see is an extra field when you submit your post where you can add in some hashtags. These can be rendered as Tags in activitypub, which do exactly the same thing as hashtags, except that they are not visible in the main body of the text. The ActivityPub wordpress plugin also does this. I add tags to my posts on wordpress, and when you search for that hashtag, my wordpress blog post shows up, even though you'll not find the hashtag anywhere in the body of the text.
Strava Ukraini!