... but Coco is notable for never collabing outside Holo, whereas collabing with indies/niji had been a pillar of activity for previous gens.
She didn't push that boundary, she erected it.
In much the same way, while she believes she had a meaningful role in creating Holo EN... auditions were announced within four months of her debut. I am rather doubtful that someone who was streaming for four months had the clout to influence that. Keeping in mind that the staff decisions leading to the auditions being announced would take several months, too.
And pre Coco Matsuri or Choco weren't exactly what I'd describe as safe content, either. The "Erolive" nickname precedes Coco, too. One might form the impression that Coco's reputation for "Pushing boundaries" is more the consequence of people hearing "Idol Company", seeing that very flashy new member (for EOPs: That English speaking member) and concluding that it must've been her pushing past idol expectations that were... only really even thought of after 3rd gen debuted in the first place.
I do give Coco this. She really was exceptionally supportive of her coworkers. The Holohouse was her thing. Her relationships with Watame, Kanata, Haachama went above and beyond. She really was there for everyone and put genuine effort into this.
This is to be lauded.
But most of the things people usually applaud her for... she either didn't do at all or she was neither the first nor the only one who did them. She just had the charisma to be noticed more than others.