Oh zip it, ya big babies. There's literally no reason to complain.
Last time both Moyu/YJ and QiYi made a new sub-brand, we got the YueXiao and Tornando, two one of the best 3x3s on the market today. Don't wanna keep buying new cubes that keep coming out? Then simply don't buy them, nobody is forcing you. It makes literally no difference to someone who wouldn't buy it whether or not it exists.
But hey, despite this, you'll probably still buy it anyway, out of your desire to have every new 3x3 that comes out, or a general compulsive-spending issue, I dunno. This directly funds cube companies to expand more, and make more cubes, and when they get annouced, you complain again, and the cycle goes on and on and on forever.
Yet, instead of practicing more self control over what you buy, you complain over having more options, for the simple reason that they exist. If you are truly content with your current mains, then keep using them and quit complaining about and/or buying these fancy new cubes that come out. Either way, the problem is you, not the cube companies.
This happens almost every damn month, I swear. [/rant.]