It’s more of a testament to a potential beneficial side effect of an already widely used drug for something entirely different.
I (in America) actually exercise 5-6 days a week with regular sauna use afterwards averaging about 2-2.5 hours per total session (20 minutes from sauna). I coincidentally even happen to take long hot baths frequently (3-4 times a week for an hour) as a form of stress relief, relaxation, and it further helps with muscle recovery.
Absolutely none of that helps me to a notable degree with what the specific pill in question does which I also use regularly. In addition, viagra adds an additional say 4 hours per day per pill to my normal weekly routine of increased blood flow that may help reduce risk of dementia when I’m older. That’s a big win in my book if it’s true as it’s something I already do and is additive.