What I find funny , is he thinks bitcoin will still exist in 5 years.

Bitcoin Business model has ever increasing energy costs, ever increasing ASICS costs, ever increasing warehouse costs,
with decreasing rewards and LN stealing transaction fees.
While it competes with services that do not have these problems.
I would agree 90% of all coins are dead in 5 years, with the possibility that bitcoin is one of the dead ones.
FYI:
ZEIT will be the Last Coin Standing.
https://www.youtube.com/watch?v=2QJlBpwIHYUHmm, I really doubt that Bitcoin will not be here after 5 years, it's one of the very few coins that has a lot of institutional investors behind it.
I don't even think it's likely that Bitcoin would be gone.
When's the last time Bitcoin has gone under $9000, the bottom is also ever increasing, so your point about increasing costs is kinda moot with high Bitcoin prices accompanying that.