Holo has had bureaucratic fuckups due to expanding quickly and being japanese, and the most we know is that they went overboard with revisions, and Artists are coming out mostly in support when even a new law would make them be fully in the right. And as far as we know, Holo has fixed whatever caused this fuckup by now
Even in graduations it was mostly because they were two veterans who wanted something else from their lives after 4 or more years of being within it
Their main Rival's EN divison and where most of the fan vitriol is coming from is still in freefall, with 6 talents dropping from the corpo, one explosively so, the others have had nothing but grievances with the company itself where the most they can say about being happy within it was the people they met along the way. Said rival also had one of the heavier scandals in the industry with possible allegations of a music producer roofie-ing people, to the point where a talent was found to have a years old tweet where they detailed feeling sick after visting that studio, which was then deleted shortly after the scandal broke. Not to mention the years of hard work and millions of views that were sent to the aether after this due to the deletion of the music videos.
Even when Holo colossaly fucks up, their goodwill they've built up and decent PR that they've had has had more people back them up both in the professional and fan space. Riku had to grovel to investors after making the most absolutely retarded PR move with the black stream and still hasnt recovered from that in the court of public opinion.