So, by that same thinking, should we all buy inferior cars to help hone our mechanical skills? Buy old, dilapidated houses to hone our carpentry skills? Buy the cheapest, least-tasty cooking ingredients to hone our cooking skills?
Well, I suppose if you want to do that, then, sure.
I'm sorry, but it just amuses me everytime I hear this "criticism" of Tamiya or Hasegawa or any of the "better" (but more expensive) model companies.
Imagine, being criticized for being too good!
In my opinion, even with the best-fitting, most accurate kits, there is still plenty of room for improvement, for us to be "creative" and take the kit from a simple assembly of parts to a work of art. Just because a kit goes together well and is accurate out of the box doesn't limit the amount of creativity we as modelers can put into it.
I've said this before, but to those of you who feel the need for a "challenge," and don't want to feel "coddled" by a well-designed, good-fitting, accurately-detailed kit, why don't you just scratchbuild all of your models? That way, you need not share the glory with any model company at all, good or bad.
I never decide what I want to build solely on the brand name. I build what I want to build based on the subject, and choose what I think is the best kit of that subject available.
Again, sorry for the attitide here.