I totally agree that Bitcoin is far from dead. Ponzi schemes and abusive MLMs (see Bernie Madoff's tenure and the thriving MLM world) have some much longer runs than Bitcoin so far.

But, crypto is really different, as Mr. Mccall and so many point out:

I'll beg pardon for the analogy, but cryptonite gives a hint: Peter Thiel's recent remarks.

If there is any possibility that PoW, PoS cryptocurrencies are vulnerable, it is on the political/moral front:

1. China accounts for 66% or more of mining/block validation of BTC and as large or larger proportions of other major cryptocurrencies

2. China accounts for over 90% of ASIC and Rig design and manufacture for PoW crypto

3. China has illegalized for its citizens the transacting of Crypto, accounts on Crypto exchanges, Crypto exchanges in China.

4. China is implementing the digital Renminbi

5. Belt-And-Road projects are all loans currently denominated in Renminbi

6. China has an open policy intention of undermining the dollar reserve system and control of it by western liberal democracies