Thats petty.
Minehut has provided unlimited plugins for a long time now, minehut is growing, and gaining a lot of players. Because people love to have free stuff. There using all this unnecessary space on minehut. If you have a ton of plugins its going to stress there servers and will result in them having to upgrade again, and wasting a ton of money. You probably think minehut makes a ton of money, they host over 8k+ servers each day, they can have as much plugins as they want. and 80% of them servers are probably free servers. The only income minehut is having is the 20% of paid servers and ad revenue maybe might have income from somewhere else but not sure. But as a business point of view this is a good idea and I don't think I should be removed, they should only remove it when they have came up with a better solution to make money for now I think this is a great idea.
Then don't use that much plugin then. If you want to waste minehut's server performance at least help them pay for it. A good server in my opinion should have 30 plugins max. And yes you still need to buy a plan, but if you want a successful server. Pay.
Then again it is still possible to create a alright server with 12 plugins if you are smart enough.