I disagree, I think she had every right to discuss it. She is a skincare influencer, this is a skincare brand, if she hadn't discussed it she would have been criticised for not mentioning it.
Also, she mentioned the brand a few months ago, she criticised their clean, non toxic, marketing. They sent her product to try and said they were going to change their marketing because their took her points on board.
I watch a lot of beauty content and I have heard of Susan Yara in passing but I've never sought her out. James Welsh and Hyram I think have both mentioned her in videos before. I think Susan is probably better known in the US and Caroline I believe has a large audience over there who would have been messaging her about the situation.