Honestly, this is shit advice. IME, for men, the two major factors in getting laid are:
How physically fit I am.
How much money I make.
Yeah, combing my hair may seal the deal, but in general, male attractiveness is not determined by how much effort I put into the one hour a day one spends getting ready to go out on a date, it's determined by the lifestyle I live the other 18 hours of the day. A fat wallet and abs will make women overlook messy hair 100% of the time.
This post is like the people who tell guys who are unsuccessful on dating apps that they "need better pictures" or something like that. No, maybe they're just not attractive enough.