To elaborate, there are no new security disclosures made in this article. The logging issue has already received mainstream media coverage, after they resolved it and published an advisory, and people have been playing with flashing custom roms via mtkclient for months (as referenced in the article).
The only new "accusation" is that they are violating GPL. I informally asked them for GPL sources months ago via their community discord server, and I'm aware of others who have asked more formally.
Asking for their input on the article was a) giving them a courteous heads-up b) a formality c) an opportunity for them to correct me if they thought I said something untrue.