This is largely solid advice, just being practical. The occasions on which to meet the younger girls at this point in America, especially, are almost nil since even religious people will look at you sideways if you are late 30s and trying to date their 25 year old (or younger) daughter. Remember, they've got career-ing to do!
The window I'm talking about is 25+, serveral months into real employment, stuff getting tiring, her thinking about the pregnancy escape. Some indebted guy from college might still be around. There is your chance to fully hit on her hypergamy with proper assets you have late 30s. Lookswise nobody is going to even notice an age gap.
My main criticism of this advice would only be that finding the kind of numbers to get a decent match is another type of lotto. In cultures where lack of economic resources is common, people grow up with traits that improve or accentuate complementarity or cooperation, not picky and entitled attitudes. I really think that the delayed window for women pushed by the society (post puberty physically they are ready, except legally and socially this is a no-no) destroys their rapidly diminishing stock, with too many carbs/processed foods/alcohol all around and so few actually exercising. The few that do exercise either take androgens or are so IG heavy, the looks are ruined.
Looks and fitness is something you can think about, when looking for teenage romance - when you're 19 yourself. That ship has sailed mid 20s. Focusing on the important aspects (especially the Lord) is what an older bachelor has to do.