If it was done without any annoncement or recognition that it happened, i have my doubts that it will be adressed at all or compensated for...
Removing a whole spell from a class should be something explained in the patchnotes
Don't get me wrong, if the pets were special/different regarding their ability to griefplay in Sieges, and it wasn't something they could fix...then i understand why it needs to be removed. But just removing it, without mentioning it anywhere is best case lazy.
Makes you think how many other things get changed without notice
I remember several announcement for changes that came with "players should not notice any effect, it's just behind the scenes stuff" that send the signal that they are open and communciating changes even if they have no direct influence. And then a whole pet gets removed from a class just like that and it isn't even recognized...
If this change had impact on 8vs8 i am convinced it would have been documented, but who cares about a few zerg-BDs?