Because it's a small niche no one really cares about? The SEC worries about structural problems and protecting retail. Crypto is neither, the second it threatened to become either it got absolutely blasted.
That doesn't make any sense. Retail is heavily exposed to retail. Did you watch the recent congress interview of the SEC? It was all crypto focused. Crypto is probably the #1 topic for the SEC. They just haven't enforced because they don't have any authority.
SilverBirch doesn't respond once you bring logic in because they don't actually know what they're talking about. Look at their other comments on crypto and some of the responses. They're just a bandwagoner