I don't blame anyone in a shitty weather climate for wanting to play in a dome. I attended enough bad weather games in my life where I never once held myself in high regard for "dealing with the elements." More often than not I asked myself why I was not on my couch at home.
Also bad were those early season NU games where it was hot AF. Sitting in Memorial Stadium for 95 degree games was fine when I was in my 20's, but not so much as an adult.
When I've been in domes like in Phoenix, Dallas, or Indy, I've never thought to myself: this is great but I'd much rather be in the heat or cold. I don't think it gives any team an advantage either, just made up Green Bay Packer fairy tales.