Perhaps a subtle ploy, all the anti HS2 will be so engrossed campaigning against this, the train will be built before they notice!
Giblets, I doubt it. I saw a fair bit of transfer from the anti Rugby airport lot come over to fight Coventry airport, but HS2 is displaced a little bit further to the west. So far, I have not seen a single name linked with both campaigns.
The anti-HS2 campaign has behaved quite differently to the usual NIMBY cries, focusing on the poor economic case for the scheme, then on the environment as a whole (including CO2 emmissions), and only going for the predictable stuff after that.
We don't yet know where the new guy stands on HS2, as so much focus has been on LHR3. Clearly, the treasury is having doubts. If it falls, it will be due to the economics, not the Chilterns.