Nah, the opposite is true for me. If I know for sure it's always a Tue, I can plan around it. I can schedule PTO for Mon and Tue, and have a nice long weekend, for example.
What's so frustrating to me is when I realize that, for example, public holiday falls on the weekend (I know this is solved by some countries by moving the holiday to Monday or Friday). Last year, 24th of Dec was a Saturday, pretty much the worst time for Christmas.