Also, he based his opinions on /a/.
While /a/ isn't inherently a shit board, it sure does generate a lot of shitposts and drivers of Fords.
I can see why he has those opinions, but he really doesn't know enough to have a fully-fledged analysis of why people have waifus and take it more serious than some people think they should.
A few years ago, I thought the same as him - understanding why one would have a waifu, but never really taking it serious myself for the same reasons he pointed out.
We all find ways to fulfill ours lives and give it meaning, and having a waifu is just one part of that big spectrum of, "things that make life worth living" that we all have, and all have differently.
Some people find themselves content in being "alpha", or in having a beefy computer that can play Crysis on max, and some people find themselves content in having a waifu.
I suppose it all depends on how you matured and how you view things that defines what gives you enough meaning in life to get through each day, just like an individual's personality will differ depending on what happens to them, and how they develop because of that.
You can never really complain about someone else's interests or waifu fantasies, as their entire life up until that point has lead them to have those interests and fantasies in the first place that they wouldn't have otherwise had.
Had I never started World of Warcraft many years ago, I'd never have had a waifu, or even developed an interest in anime. I'd be living life as a different person, because the events that defined who I became and who I will now become in the future would be different.