I never put my GPA on any resume. I had a garbage GPA because the only classes I went to were CS classes so I got horrible grades in all my required electives. I was worried someone would ask and no one did.
Back in 2004, I had a phone screen with the folks at Time, Inc., for a systems admin position. Now, I'd been out of school for about 10 years at that point. The interviewer's first question was "what was your GPA in college?", and I was forced to confess I honestly didn't remember.
He stammered a bit, apologizing, and then hung up on me. I've always considered that dodging a bullet. It's a weird thing to ask someone with many years of professional experience. The only thing I could infer was that all of their staff were very young, and this was still relevant to them.
I remember an interview with a French company (in the UK) a few years ago - when they realized I had arrived in tech via a vocational route it got very frosty.
What can people even do with that info though? You can’t compare universities as each course is different. So I guess you can compare two people at the same university? Not very useful is it.