If you are staying on a 1MB chain when the fork happens, why do you care what the bandwidth requirements will be when they won't affect you?
On my side, I care because I hope a better fork proposal will arise, and I care because if Bitcoin explode in two big parts, it will be a hard strike on it.
By the way, I think that "pro" are nowhere near 95% of hashrate supporting the fork, why are you so sure it will happens ?
Pros need 95% to change, anti needs 5%, so it's up to pro forks to have a proposal that gather 95% favorable opinion.
If no one change their minds, nothing will happen (And I think something should happens, but not this)