Olivo wasn't terribly specific in her statement, but I never had the impression when watching that it was really about Scott Rudin. The lack of any response to the story on Rudin was the only specific thing she mentioned, an easy thing to call out that didn't happen.
That said, a question for everyone, because I don't know the answer:
If Karen Olivo stays quiet earlier this week, does Scott Rudin "step aside" today?
On one level, it's hard to imagine Olivo's announcement having that sort of immediate impact. She's not a household name, had no direct connection to Rudin or his shows, and wasn't joined by other Broadway stars. (The response here was dismissive by many, with several saying the Moulin Rouge producers were planning to get rid of her or just saying she just bailing to go back to her teaching job.)
But I can imagine her statement increasing pressure on Rudin not to screw up Broadway's high-stakes reopening. Rudin, for the all his seemingly fearsome power, is just one independent producer. The last thing other producers, landlords and New York officials would want is this sort of controversy shadowing what will already be a difficult reopening.
If it's the latter, Olivo may have had a bigger impact on Broadway with her statement than she did in any of her starring roles.