The blog post is really terribly written. It is full of negative emotions which distract from the point the author wants to convey.
The very first screenshot contains a window of "Unetbootin" in Russian and a version of Remix OS USB Tool in English. That makes is very difficult to compare the applications, which is a means to support the authors thesis. Unfortunately, such an article can only have the opposite effect of advertising for Remix OS.
I hope somebody will have a calm look at this and make a write up which is credible. If Remix OS is in violation of the GPL license, I hope that there will be consequences to their actions. At the very least I would expect them to release the source code