I'm familiar with the youtuber and find him to be a pretty trustworthy science explainer, and he does acknowledge that one of the studies has a conflict of interest, but it appears to be in line with other studies that do not have that conflict (though he probably would've been better off not including biased studies at all).
But I am a rando on the internet, so my vouching for him to be fairly trust-worthy should not hold much weight. Ultimately people will need to take a look at the studies and determine for themselves if the youtuber is coming to a solid conclusion based on his arguments and interpretation of the data.
If you are concerned about potential misinformation being spread, then, if you happen to have the time and inclination, you yourself could investigate each source and its trustworthiness, watch the video, and come to your own conclusion as to the veracity of the youtuber's conclusion, and then detail your own conclusion in a comment here.