Well even their team disagrees with you, they have for the last years chosen to focus on things like stories (dead), clubhouse (soon dead)instead of working on removing spam/scams
Twitter Spaces is good. Twitter is also very popular in Japan and Spaces isn't only a Clubhouse competitor, it's also a Twitcasting competitor over there.
Though, twitcasting has more monetization options and Twitter only has super followers which nobody actually uses yet.