There is no post of him that explicitly says so
Many scammers tried to push on this narrative, which is false, as far as I know.
You're falling in the same trap when you will deny any change just because it was previously supported by an individual you don't like.
The math is pretty clear, the outcome is also, you will never be able to have adoption and cheap transfers this way, and for LN to actually be used en masse, well you will still need bigger blocks unless you want fake decentralization with custodial wallets.
Oh, and last day fees were 8123 4TB ssd, that means users spent that much on fees a day while nodes (which are also run by users) won't be able to spend that ..in two years...cause cost!

But is there any technical limitation that would prevent an upgrade to 8 mb? I think there is none but i honestly dont know
Yeah, it's called periaqueductal gray synapse meltdown, of in layman terms, die hard bitcoiners letting go of their ego.
Won't happen!