Unfortunately it is impossible (or nearly impossible) to measure the "majority" in bitcoinland.
That's why statements similar to the statement from the person that I've quoted are ridiculous. They are (usually) backed up by nothing.
I would say that it looks like that they figured out that Blockstream et al. has any intention of actually delivering a HF that increases the maximum block size, and they want to be sure that they will not get tricked into giving Blockstream et al. what they wanted and not get what they bargained for in the end.
AndreasMAntonopoulos I believe this is called a "Mexican Standoff". No segwit no HF. No HF, no segwit. Compromise time.
Seems like things are going in the right direction. Not.