I bet a good number of those people are the ones who get lots of vacation time already and are just pulling others down because they want to be treated better than average. It's like how there's people who oppose raising min wage because "they don't want burger flippers to make the same pay as they do". Crabs in a bucket mentality.
There's a lot of Americans who sadly think that way. We see it with the student loan forgiveness efforts, too. They can't be happy with others getting nice things unless they themselves are still somehow getting better things. To not mince words, they lack empathy and are selfish.