It seems like anything other than an uncomplicated "Yay, I'm so happy! Labour did amazingly!" is getting characterised as tory sour grapes.
I have never voted tory in my life - always for either Labour or Green. This time I voted Labour tactically. So there are no sour grapes here, but I do think that it is important to critically analyse the results to try to understand what they are telling us.
And I can guarantee that all the parties will be doing similar analysis. It is not as simple as saying "Great, we've won the seat, nothing more to think about!" Any party that rests on its laurels in that way will ultimately fail.
History (Brexit!) has shown us that politicians do not need to win large numbers of seats to exercise high levels of influence. So yes, I care about how the vote is split and what that might mean.