I hear you.
I don't know how new Excel performes and I thought it's the same as ten years ago - the version I'm trapped in. With people who obsessively try to drive it to the edge where it's not responsive on average office PCs.
But if it works well with various big spreadsheets now, it's a wonder, with how many new people start to tackle programming with Python. I obiviosly won't write a script faster than normal operational speeds of software, it's just some tables ended up that big and broken I could only open them like that. But that, I guess, is exclusion?
It's just the issue of people using a microscope as a hammer when they need to break nuts.
God, they are sooo unfitting.