Well, sure, your business interests will win if you ban competition.
If crypto is useless, it will die organically. If crypto is useful, it will thrive.
Why does the government always need to ban new things? If FTX wasn't a "crypto" scam it would have been some other type of scam.
When TikTok gets shitty, people will stop using that too.
This is supposed to be what makes capitalism strong, and instead we have authoritarians trying to disrupt any threatening innovation.