I am a crypto miner, so my perspective comes from that foundation.
Lots of things were touched on in the article. I'll contain my reply to Bitcoin, my primary interest. The vast majority of other cryptos come and go and are super high risk, so they are not of interest to me. 99.99% of them will go to zero and the holders in them will loose everything.
Bitcoin runs on a four-year cycle due to the built-in halving process (which happens every 4 years). Last year was the end of the four-year cycle, and this year is the beginning of the new cycle. At the start, the price usually falls to the previous cycles' high. In this case, that is USD$20k. Currently, it is sitting around USD$30k. So those into Bitcoin will not be surprised or upset if the price falls a lot further. Next year it should consolidate. Year three it should increase in value considerably. Year four it should hit a new all-time high, and then commence the process of crashing to get back to the beginning of the cycle.
This stock to flow model shows this happening over the last 12 years. If it follows that trend from the last decade, you could reasonably expect it to hit USD$100k in about 2 or 3 years. By the end of the decade, it should be hitting a million dollars.
https://stats.buybitcoinworldwide.com/stock-to-flow/Bitcoin is more of a get rich slowly crypto because of these cycles.
Bitcoin itself is a digital asset rather than a digital currency. People understand currency better and use this term in error. Bitcoin will never be used to meet the day to day needs of a transactional system. A better analogy is to compare it to asset classes like gold or property.
I don't know anyone who holds BTC who would not welcome regulation. Regulation would allow BTC to be turned into things like ETFs, which would allow big managed funds to participate. There is an expectation that once this tidal wave of cash is unleashed demand will go through the roof. So yes please, bring on more regulation.
BTC is a "public" blockchain. If you know someone's BTC address, you can see every transaction they have ever made. Who they got BTC from, who they sent it to, and how much they are holding. Anyone who thinks the BTC blockchain brings privacy or anonymity has badly mis-understood the "public" bit.
A standard fiat bank account gives you far more privacy.