That is the best advice. When I turned 10 my father simply grabbed all my toys and threw them out - just like that. His reason was that I was too old to play with toys.
My dad was a bad influence on me and my mother was absolutely hopeless so I had to take it upon myself to forge my own identity. Unfortunately to do that you need to be independent and that means at the very least to 'pause' your toy collecting or any other time and money consuming hobbies and get yourself a stable full time job that can provide for you without any need or aid from your parents.
Once you do that you will be free to do anything you like as long as it doesn't interfere with your independence and doesn't make you seek help from your parents, the government or anybody.
Don't sell your collection because you want your dad off your back because you will only live to regret it. If you need to sell, do it to bring yourself a step closer to independence and once you achieve it, reclaim your collection back, just like I did![]()