I guess it’s how you interpret to me he’s saying eradicate the need for altcoins.

Maxis say “just use bch if you want big blocks, just use Monero if you want privacy, just use eth if you want smart contracts and stablecoins”

Why not allow that optionality on btc layer 2 without the altcoin?

More people will be inclined to use btc on layers 2s instead of shitcoinery on other chains.