- A multi coin world literally exists right now, the last 15 years, and multi fiat currency for hundreds to thousands of years . Trending to one is only true in a perfect world if they are all functionally the same and they are not.

- You can say this for getting any crypto in general including Bitcoin (most users have to swap fiat). Binance, largest exchange in the world, delisted Monero and it's still around and doing fine. Atomic swaps, DEXs, and p2p exist and UX gets better every year.

- With lightning you must run your own node to gain any privacy benefits, offers no receiver privacy anyway, vulnerable to probing, leaks data when closing/opening channels. Vast majority use LN with an LSP or custodian anyway = much weaker privacy. Ironically unannounced channels, the most private way to use Lightning, offers no plausible deniability.

For your last two points...
-ASICs can't match the ubiquity and accessibility of CPU mining which is more conducive to decentralization. No large capital investment required.
-Ostensibly harder to attack, but if successful, much harder to deploy new ASICs to fight back since they're in such short supply
-Large concentrated mining farms are easy to co-opt and regulate for governments.
-Heat, noise, and energy draw make ASIC mining very obvious
-Everyone knows what you're doing/going to do with that ASIC miner you bought
-Over half the hashpower now requires KYC
-No p2pool. Stratumv2 helps but isn't sufficient. Large pool operators control payout.
-Targeted mining censorship possible

Good video though

"Police raid a concealed #Bitcoin mining operation, initially mistaking it for an illegal marijuana farm due to the heat signature"
https://twitter.com/BitcoinNewsCom/status/1721359382745874489