Online dating is problematic in many ways and very hard for men especially. I think women see men who use those apps as of lesser value anyway.
Therefore I think the best advice for men is to understand how women signal interest in real life. Some people pick it up intuitively but many people today have to learn it. Undercover Sex Signals by Leil Lowndes is a good book to start. Don't use online dating!
In my view nothing more than badly written psychobabble which probably does more harm than good.
Overall, a lot of guys don't take a moment to look more deeply into the overall picture of what is going on, but instead think everything is innate and/or are instead getting sucked into a game where they will constantly lose. Life is way too short for that. The argument more guys need to be making, is about what's helping them to get the most out of life and get results.