I haven't encountered a "pixel perfect" designer for at least 15 years now, if not more. Virtually every single UX designer I've worked with provides flexible designs that scale with screen size.
In my side of the agency world there are a lot of designers who design UX that aren't UX designers. A lot of them want started in print and expect pixel perfect designs/don't understand the need for breakpoints. We had a client who got on our case about a design being a half a pixel off. That sounds like a joke but it genuinely happened.
They said the people who claim to know more than actual designers will want it pixel perfect. So i.e. The designer knows pixel perfect is a fallacy, the client doesn't care and wants a pixel perfect match of their figma document on their personal laptop screen.
Solution: make that only for that specific viewport, ignore it for the rest. Hard unreasonable clients are not so common as people depict them to be, at least in my experience. I do have a spidey sense after years of client work in sorting them out right away, maybe, but even stupid clients are reasonable if you’re able to make business points about their requests
I have worked with one of those freaks last year. She argued that every block had to be exactly like it was on Figma, and she once sent me a screenshot with a little ruler drawn on it, to show me a 3px gap. It was such a waste of time and energy...
