The suggestion that "we are derestricting before general availability of the vaccines" [
@mjr ] is manifestly wrong (UK perspective) - see detail below.
So "even if it kills us (well, more of us)" is verging on histrionic, or the uber-pessimistic or super-precautionary (look where that principle is costing lives).
The idea that the UK is 'in competition' with the USA over who can relax restrictions first is laughable. Both nations (indeed all nations) are trying to steer a course between rocks and a hard place. The UK has the tide with it and excellent charts (much improved from last year's experience).
I think it laudable that 'Global Britain' is making its best efforts to emerge from the pandemic, in the interest of its citizens, who are (mostly
) no doubt as determined as their leaders 'to beat the world' (would we prefer to 'lose to the world'?) and start living again.
This path is a combination of a determined vaccination programme and a prudently phased relaxation of restrictions, with an eye on 'data not dates'. By mid June, ready for the 'no earlier than' date for the last change, 50M first doses will have been given and of that 50M, 30M will have received their second jab. This is nearly all over 20s: 75% of the whole population - I'd call that a "general availability of the vaccine".