I have another work-around I forgot to post. I forgot because I didn’t even realize how powerful it really was.
I knew that zzq’s delightful extension was able to search the full text of the description. So I thought adding the most important hashtags to the end of the description would be a fine work-around. But what’s more, it actually filters by tags as well! Just omit the pound sign, and accept that for general terms there will be some false positives matching the term, but not the tag.