If I may share my point of view - I got my question downvoted and closed without any reason given, I suspect because it was assumed I didn't read FAQs. I did read them, back when I joined nearly 2 years ago when this rule didn't exist, so making a specific close reason that isn't a generic "off-topic" would, IMHO, help to clear the confusion that is created in cases like this, otherwise users like me will just see other open similar questions and assume that asking them is fine. A message like Mark suggested would be ok as well, if a specific close reason cannot be added.

I'd argue that the examples in that "shopping question" post are way different from that question (not asking "for the best registrar", but for a registrar with specific features), and the conclusion "the best recommendations will be obsolete within a year" does not apply in this case as the similar linked question looks quite popular/useful after more than 2 years.