Unfortunately not enough people use it. And realistically, in the middle of a formula 1 race or a ufc fight, there’s no time to be hashtagging each and every keyword if you are live sharing your thoughts or replying to others. A single key hashtag is fine like #AusGP. But when I want to search for Albon and Red Flags and opinions on that, I can’t expect people to do #Albon and #RedFlag. Full text search is sorely missed :,(