Baby shower rant

For context we decided to have a combined baby shower (my family + husband’s family) at my parent’s house in a few months. Initially my MIL was thinking of throwing her own, but after talking with my mom they felt hosting one together made the most sense. Additional note, we live in the same state as my parents, MIL lives on the other side of the country. I’m finishing up the invitation, and at the bottom it says the date and “at the [Last Name]’s” signaling the location will be at my parents home. We shared with our respective parents, more so as an FYI/gesture of excitement, and my MIL told my husband that adding “at the [Last Name]’s” made it seem like only my parents were hosting and that it didn’t sit right with her. She asked to redo the invite to remove the location line and explicitly outline who the hosts are. My husband told her outright that this was a dumb thing to be fixated on, specifically because it IS my parent’s house that the baby shower will be hosted at. I honestly just want a low key gathering and I don’t understand why these semantics are so important. It was really off-putting to me and selfish behavior, I’d rather have separate ones at this point. Just needed to rant.