Clubhouse from the beginning was just a bunch of vapid hot air about how cool Clubhouse was, without any substantive backing behind the supposed coolness except for all the VC-backed users constantly saying how cool it was.

When Clubhouse finally opened up to a wider audience of people who weren't being incentivized to use it, new users churned out almost immediately because it wasn't actually very cool at all.

Basically, the story of Clubhouse was the story of Google Glass.