Dairy is a category that depending on context may or may not include eggs. In this case the distinction doesn’t matter. Vegans wouldn’t have experience with strictly defined dairy or eggs.

For some reason, people lump eggs in with dairy, presumably because they're unaware of the difference between hens and cows. You'd have to have quite a lot of detectable THC in your system to confuse the two, but here we are, people think that eggs are the same as milk.

To be fair, my milkman delivers eggs as well as milk, cream, and butter, but they come from a totally different farm.