This is the original article the bitly link points to:
https://psmag.com/environment/how-gender-stereotypes-affect-pro-environment-behavior/
I see nowhere in there talking about anyone actually 'avoiding green behavior to avoid being considered gay', in real life.
The studies mentioned are surveys of hypothetical people, and its conclusion is something that's already known and obvious: the more things you do that are associated with the stereotype of the sex you aren't, the more likely it is that the average person will assume (correctly or not, but that's beside the point) you are gay.
The only distinction is that they were looking only at how some 'acts of environmentalism' are stereotypically aligned with femininity, but the above is true of literally everything that's stereotypically aligned with either femininity or masculinity.
"Suggests" is used in the screenshotted tweet to manipulate the reader into assuming things are taking place, without any evidence they actually are.
This post is disingenuous tripe.
