I don't have any experience with Everlane yet, but wouldn't you say that someone like Uniqlo or Ralph Lauren (Not sure what your idea of mid level brand is) has pretty consistent sizing on something like T-shirts. If you buy a regular fit t-shirt from either at one or two years apart wouldn't you expect the sizing to be the same? I think the issue is that people are buying shirts from when Everlane started releasing them and they have adjusted the fit to reflect feedback and the sizing has been inconsistent that way.
I don't remember if this was this brand or not, but I know people were also having sizing issues with Kent Wang shirts where shirts in different colors but same style were sized inconsistently.













Honestly, these kinds of statements really aren't funny. They just make you seem like an ignorant twat.