Just to play devils advocate, because I agree with the existing answers; I believe we should remain wary of these questions.
There's a very fine line between what's on-topic and what's not in a lot of our tags, because whilst we can accept some questions about those topics, others that are not acceptable, may slip by and set a precedent for questions that we don't want.
As an example, if we hadn't all been so vigilant, there was a point when the critique tag could've blown up and caused problems, back when we discussed the difference between feedback and critique.
In that case, it was much easier to define what we don't want, because we could specifically name the type of questions we don't want. We can't do the same for every tag.
I can think of a few potentially problematic topics we might want to moderate more intensively than others:
Specific pricing / accounting related topics such as costs (Some questions would be good, but most will not have a useful answer when the context is too specific).
How to promote oneself as a designer (interesting, but requires a lot of description from OP to make a good question - not one or two lines as I've come to expect from new users).
Anything related to starting a design business (it really needs to be specifically about design to stay here, and off the top of my head, I can't think of anything about starting a business that would be better off here than elsewhere).
Business decision making (These kinds of questions require extensive answers that should be backed by existing theories and formulas). In fact, I think there would be very few decision making questions that are on topic here.
These are just a few of the topics that could have controversial questions posted.
For that reason, I think it's hard to give a blanket "Yes, we should keep them". As with a lot of our content, this is very much a case-by-case consideration.
Bear in mind, that simply by having this discussion, we are all able to share our thoughts and move towards a generally consistent approach. So my point is, even if it does require case-by-case consideration, the fact that we've had this discussion has already improved our approach to this.