Our middle child started uni recently and nope, I don't want to engage in this level of interference. My situation's a bit/a lot different as he's chosen to live at home.
I would have been MORTIFIED if my parents had half an idea of what I got up to in my first few weeks/months/years of Uni, or knew where I was at any given moment of the day, or who I was with (mostly from a shagging around). Of course I spoke to them on the phone (maybe once a week? maybe less) and wrote letters (ah the olden days of the early 2000s, to be fair most of my letters were to friends and my grandparents) and we're close, we're still close, but oh my days please leave 18 year olds to sort their own social connections out.
It was hard to find my people but I did that all on my own and they're still my friends now (we've got a weekend away coming up soon).
It's an important life skill to develop to build your own relationships, meet people with similar interests, be vulnerable, make mistakes. Surely at 18 they don't need mummy and daddy to facilitate that for them?!
With my son I think it's been more about us trying to open up opportunities for him to do it himself, so getting him to get an earlier train to uni so he can go to the cafe there before lectures so there's more chance of chatting to people, or encouraging him to sign up for the gym on campus so he doesn't have to use his usual gym and there's more chance of meeting people at the gym with similar interests.
I guess he doesn't NEED the same sort of friendship net and he certainly doesn't WANT to be as sociable as I was as he's doing an industry placement half the week too and they appear to have a really strong social calendar built in for the apprentices.
I want him to be happy and make friends of course but I also need to trust him to do that in a way and in a place and in a timeframe that feels comfortable and good for him.
I would have been so embarrassed I'd have cringed myself inside out if my mum had messaged other parents about my loneliness. Oh my days. Can you imagine?!!? Aged 18. When you just want to be cool and your own person. EEEWWwwwww. Leave them be. Support them from a distance. Don't crowd them. You're right that it's odd AF.