Is there any post or paper arguing about the impossibility of 2-pegged sidechains? I googled and found nothing.

What if some miners decide to reject XT mined blocks rigth now?

How easy is, for a miner, to find the place in the source code where it says "1 Mb" and remove the line?

I mean, if most miners, like 80% hashpower, decide to raise the limit of the block size, they can, right? Core developers are neither necessary for this nor can't do anything.

Or am I missing something? #sincerequestions