Transformers that has limited poseability, can't transform and are goofy looking and pretty expensive for what they are? Of course they're going to shelfwarm! Q Transformers manage to sell in Japan despite being goofy ("cute") looking, but:
a/ They can transform
b/ They're cheap

But even then some Q TFs may still become shelfwarmers. I picked up the Evangelion Q Transformers in Japan - discounted - just a month ago, and those toys were released in 2015 meaning that they'd been shelfwarming for two years!

I can't wait to ignore these new Mighty Muggs.