though the quote above is speculative and concentrating more on a orgasmic fiat value the person hopes for..

here is some food for thought

if bitcoin was $600k. then the smallest measure (1sat) would be at cheapest $0.006cent used as a fee and about $0.60 as the minimal acceptable spend on a scenario where there is no bottlenecking and no need to worry about priority because everyone can transact in the very next block.

thus i would hope the sat tx fee decreases as the fiat price increases to counter each other, rather than the fee staying fixed at 0.0002

however in the preferred scenario of a sat tx fee moving down the decimals..
as soon as it starts to get busy. a tx fee becomes 2sat+ (1.2cents+ where an acceptable spend is $1.20+) which would eventually restart another upperclass/underclass debate on who deserves to use bitcoin as a open network with no middlemen, making developing countries treated as "spammers" again

some stupid people think bitcoin works top down(bitcoin make satoshi). and that adding an extra decimal would solve this. but bitcoin works bottom up (satoshi make bitcoin) so adding an extra decimal is the same as turning 21mill bitcoins into 210mill bitcoins
2100000000000000 sats = 21m bitcoin
21000000000000000 sats = 210m bitcoin
which is something that should NEVER be done as it would definitely affect peoples value perception (much like share dilutions/tulip mania)

but this is just speculative 'issues' that are not part of the current worries of today

things for today are the capacity and fee measure decrease to keep bitcoins utility as a no barrier financial tool for anyone to use