The very least they could do would be adding a new category to the PF to sell/craft, as that's specific enough to deserve it. And then let us select which categories (plural form) we want to see at once, so that we can filter what we are not interested in. Problem solved: we don't have to bother seeing things that we don't want to while still being able to see multiple categories at will, and with no more server resources needed (you just change the query, or it can even be sorted out client side).

As you all can see there's ways to fix this annoyance, and I'm sure that the devs could even improve it or find better ones that still work that way. You can say whatever you want, but some of the uses that the PF feature is being used for are things that I'm sure that weren't intended when it was made, and it needs to be sorted out. Because it can be annoying sometimes, yes.