Looks like GW didn't make enough Tau for everyone, and LGSs are getting the shaft because of it.
Is it malice or incompetence? With GW you just can't tell anymore. They tend to use equal measures of both. Though it is possible GW just didn't correctly gauge the appeal of giant freaking robots.
It also works with my current inner narrative about GW's release schedule. As in it's more panic than planning.