There was North American data suggesting that there was a correlation between anti-gay attitudes and germophobia and disgust, but now there is new information from a broader range. The person tweeting out the news, Lyman Stone, does acknowledge that the polled sample is still university students, even if it is cross-cultural. So that is a possible weakness.
I have quoted Stone before about covid issues. He identifies in this discussion that it is not germ phobia, but pro-fecundity that seems to be the driving force underneath, with the disgust being a correlate from the same source, not a cause in itself. He is a statistician completing his PhD studying fecundity. The discussion is not that long, but there are a few places you might have to double back to make sure you understand what is being claimed.