Of course it is.
Yes, one of the pledges. Things change and they're now (correctly, IMO) looking to build a new stadium to suit both their own interests and ours. The revisionism that the club was only sold to them - not by you - due to them saying they'd look to buy the ground back, is mental.
The fact is, without them doing what they have we wouldn't be in this league. We might not have even survived at all.