Sure, if you have no other information, but we have other information. We know how much YouTubers obsess about their videos, and the ones that don't are the ones who aren't getting viral videos. We know how they pay attention to every aspect of their videos, from the titles to the thumbnails, to everything else. We also know that YouTube provides all kinds of tools to allow creators to see what part of their videos are most watched, etc. They also provide all kinds of information about who your audience is, including age and gender.

In Naomi Wu's case, even without that analytics information, we know that one of her most popular videos is "See My Boob😜", and if you open a typical video and look for the most replayed segments, it's often a part of the video where she's showing off the underside of her boobs for a second, or something.

So, it's reasonable to assume that she's aware of what her overwhelmingly male audience pays attention to in her videos. And it's reasonable to assume that it plays a significant role in the decisions she makes. But, it seems to me that her explanation video tries to pretend that appealing to horny male viewers isn't part of her goal at all. I believe her when she says that she's into girls, and that her clothing choices are based on appearing feminine, and appealing to girls. But, I don't believe that appealing to a male YouTube audience isn't also part of the calculation.