No one's used it as an excuse, but why bring it up? I didn't see anyone going up to Kane Williamson and say "England smashed you for 300+, what do you think of the pitch?". The averages may have gone up but this wasn't a million miles from the average.
Eoin Morgan being interviewed on Hussein -- 2 questions on the pitch and a comment from Morgan: "Pakistan were used to the pitch having played on it before".
Unless it was a broken up pitch with uneven bounce, injecting a huge element of luck into the outcome, there isn't a need to refer to it. England simply weren't good enough and let's ask questions about that.
It's cricket though, the fact cricket is played on pitches that have differing characteristics, behave differently, and change throughout the game is absolutely integral to the sport. I appreciate that when people talk about pitches and how they suit different sides it can seem a bit like damning with faint praise, but to
not talk about pitches when you're talking about the game is like talking about the game without mentioning how one side bowled.
I've not seen anyone take anything away from Pakistan today nor the performance of Hasan Ali, in particular, and the Pakistani bowling more generally, but it was a used pitch and Pakistan did adapt better to it than England (which was part of Morgan's fuller quote) those things can both be true (and they self evidently are) without that being a barbed dig.
I've got a feeling it wouldn't even have got a mention if Pakistan batted first and got rolled over for 212.
What is a good wicket by the way? Does it have to be a pancake with 700 runs in it to be considered a good wicket?
By current usage yes. A 'good' pitch is invariably referred to as one that suits batsmen with good pace and carry. Rightly or wrongly (and I would firmly agree with you that that is wrong) that has been the case probably since cricket has been invented. It's stupid, but it is what it is.