Yeah, my bad. I have not payed attention lately, but I was specifically thinking back to the time of Fingolfin.
I believe he ruled Thal for a very long time. King of Kings and all.
Pretty sure he ruled through 2 or 3 different invasions before he finally left.
Well my first response would be.. 'So what?'
This probably means he is doing his job well. It is not a democracy where elections are run every month.
People can always rebel, protest, secede, ...