I agree, there is more policy based evidence making (or interpreting) than evidence based policy making.

But I'd also argue that this problem (policies are similar no matter what party rues) is not one of the trivial ones.

It's one of the hard ones, because it is sometimes true (especially in dual party systems like the US). And in other - very important - cases, it's suddenly not true.

In other words, the limits of politics are mostly very narrow, but sometimes frighteningly wide. Covid is a prime example.

We (society, citizens, politicians, scientists) need to do a better job understanding the state transitions from narrow to wide; but it's a hard question because there are so incredibly many factors and very small N (few observations, cannot easily transfer insights from one leader to another due to biography, for example).