It’s not as if people haven’t. If you’re following this topic, there are several threads, some which have legitimate gripes against dual spec.
This is a pretty silly thing to say, imo.
I doubt that to be true, considering how active you are on the forums. I think it’s more that you just don’t agree, and are being dismissive of the opinions of others.
Are there? Name one. I haven’t seen a single upside that is unique to dual spec stated.
EDIT:
Oh, here’s a post about it. There are several points made in this thread, as well as the various threads it is linked to