I worked at a place where 10k LoC PRs were the norm. At my next place, I’d open a 1k PR and people would lose their shit. They’d ask for it to be broken up into smaller PRs and my response was “it’s already ridiculously small”
Personally, I’d rather see the big PR and spend time reviewing that than trying to figure out what they’re trying to set up and do. As long as the big PR is coherent and well-written. If it’s spaghetti monster, I’ll pass.