Which is why I said in its current form, not so much

The current form isn’t even conservatism, it’s just full blown fascism.

Having a dissenting voice can at times help ensure whether or not you’re on the right track.

True in principle, but not when that dissenting voice drags you further in the wrong direction you were already heading, as is the case in a to party system where both parties are right of center and the one closest to the center is pathologically obsessed with compromise for the sake of compromise and the other one is ideologically opposed to ever compromising.

That’s why I said conceptually it’s good, or at least it can be.

I still disagree. The concept of an opposition party is good. The concept of a center right to right wing led party having an opposition party to the right and none to the left isn’t.