I want to see what you all think.
I don't think it is ridiculous, and I think it is a milestone worth celebrating. I'm also sorry that you didn't get to celebrate yours in the same way!
As a lot of folks have said, this is going to differ from family to family. My daughter finished her BS in May of '20, so no party for her. We got all dressed up and went around campus to take a bunch of pictures--and the upside of it being a pandemic was that getting uncrowded pictures in front of the stadium was really easy! (Luckily she'd ordered and picked up her cap and gown before everything shut down in March.)
My son finished his BA in May of '22. He and his housemates held a party for their family and friends, and they did all the hosting, ordering (and paying for) the food and drinks. He and most of his circle were all townies, so we knew folks more or less already, but got to meet the parents of the kids from beyond Ann Arbor. It was a lovely afternoon, and also walking distance from the stadium so we could just hang out while traffic dissipated.
My daughter finished her MA this past December. She really didn't want us to make a big deal about it. Part of that is because she's continuing her studies, and so this felt a little like "Pass Go, Collect $200" rather than some big accomplishment. But, I remember thinking exactly the same thing about my own MS, and it took a long time (and a fair bit of therapy) to uncover why that was. Plus, we wanted to "make up" for her pandemic graduation at least a little bit, and do the deal. So we did our first non-home-court graduation.
None of these were big extended family celebrations, but that's partly because we rarely do big family gatherings in any event. It's just not how we roll. But, I could see doing it differently. They are all important milestones and rituals of celebration.
It's easy for us to think of these events as ordinary--particularly so for the graduates themselves. After all, everyone they know is getting a similar degree, so it can't be that important. But, it really
is that important. We don't do enough celebrating in our lives, so I'm trying to be more conscious of it when I can!