Disney, when I was your age I had the same issue. I had a weekend job in a bank and I had my eye on working my way up - full-time, team leader, then fraud. I loved it! I had no desire to become Yet Another Statistic of someone with a useless degree. I didn't want to spend thousands I didn't have; I wanted to save, learn to drive, buy a flat, invest, start earning money.
But my mother insisted it was her way, or she'd throw me out.
So, A levels. Hated. Degree. Massive waste of time. 2:1. Stuffed it in a drawer and forgot about it. Now £10,000 in debt and I maintained, via part-time and shifts, my role in banking and finance. I racked up 8 years decent experience, but how much MORE could I have achieved if I hadn't had to waste time on the world's most useless degree just so my mother could boast to her friends "she's gone to University, you know" like she was Hyacinth Bouquet and anyone in the early 00's really gave a shit.
Now I'm looking to retrain (short course) and return to work and at no point have I ever wavered in my belief the degree was a waste. It was. A. Massive. Waste. It genuinely makes me angry I was forced to do it and I am the one saddled with the debt. I never earned more than £14k a year and so have not been able to pay back a penny (repayments, for me, don't start til £15k.)
I am not confident I want my kids to go to Uni. If they have some unbridled passion to be doctors, lawyers, or something else that genuinely requires a degree then fine. But there's no way they're doing what I did, sitting on my arse attending lectures for 4 hours a week (the rest of the week being 'reading time') for a useless bit of paper delaying my adult life for years.
It is a shame they are going to bully you over this - and you might not be at all wrong that they're focusing on the benefits they will lose, because my mother said the same thing. You could consider a house-share and move out. Call their awful bluff.