https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7372205/
What is most telling about all of this is that there is no honest discussion. My only initial comment was that this blocks the same protein that ivermectin does. Multiple studies confirm this, its easy to search for them, and it has been the hypothesized mechanism by which ivermectin may show some efficacy.
Does ivermectin block TMPRSS2 or not?