I wouldn't say there is a "lot" of anti-Robotech views expressed by BattleTech fans. For the most part, a vast majority of players are indifferent—if they even know of Robotech. Obviously, it can't be said to be no anti-R sentiments, just as it can't be said that no anti-BT sentiments exist within Robotech; but for the most part, the majority of BT fans are video gamers (of both the MechWarrior and BT sub-franchises), A Time of War role-players, and of course the strong interest in the tabletop games of Armored Combat and Alpha Strike. As a fan of both R and BT myself, and well immersed in the BT community, the default acknowledgment of R is that it has several mecha designs in common (or at least it used to, until the revival of those designs with new visual models), but that the storylines and game mechanics are SOOOOO far apart as to be meaningless. Most players were not around or not really invested in HG's legal issues with the (now defunct) FASA over 30 years ago. In other words, the two franchises co-exist with their fanbases, with Robotech barely a thought, much less a concern, for the vast majority. Honestly, the only time it comes up is about every 2 or 3 years when a new BattleTech fan indicates they discovered BT because of it and they are always 100% welcomed to join the fold (as I did 37 years ago).