If you'd known all that and what was going to happen you would have fixed for 2yrs at that point and then for 10yrs by March 2022 since that was all still possible to maximise the lowest rate for longest period. With that noted if you mean that yeah at some point you know they would go up again, well yeah, everyone realised they couldn't last forever at the low rate but it was knowing when that would happen and what would trigger it.
Excatly and for a lot of first time buyers to even get on the property ladder they actually just generally have to basically max their mortgage ability to even secure a property rather than people generally just buying beyond their limit.
And its so expensive and stressful to move