The degree of tinkering really depends on what brand primer you use. From what I’ve read here, CCI and Federal work with minimal fuss in the PP. Its “dirtier” primers like Winchester that give it problems. Winchester absolutely will not run without substantial tinkering.
I’ve loaded about 15k with Winchester and I have it down pretty well now. The main selling point to me is zero upside down primers. And for that I will put up with some of the hassle. Now that I have it running it’s really not that bad. But I can see how most people, that pay for a product expect it to work out of that box, and that is not unreasonable.