The final argument is true to a point. The necktie is about the only true area of self-expression allowed to men in a business setting. Sure, there are other contexts where you can be more expressive in the cut, color or fabric of your suit, but (as long as it's not too wide, or too narrow, or to short, or too long, or too bright, or too eccentric) you can add some individuality and personality to business dress with a necktie. But really, it's a limited form of self-expression, and many men don't really give that aspect of the necktie any substantial amount of thought.
But this is just plain wrong:
The most common complaint I've heard is that they're "uncomfortable". Nonsense. As a former seller of fine tailoring, I can let you in on a secret: if your tie feels uncomfortable, it's because you've got a fatter neck than you thought, and have bought your shirts a collar size too small.No, really, for some people a necktie (or even a properly fitted dress shirt with the top button fastened) is uncomfortable, period, end of story. I'm not going to argue that people whose shirts and neckties form tourniquets around their carotid arteries won't experience more comfort if they invest better fitting shirts, but for some of us even a collar that's a half-inch "too big" doesn't give enough relief from the discomfort of having a silk noose wrapped around our necks.
But even if you're fortunate enough to feel no real discomfort when you're wearing a necktie, it's worth considering both the expressive and comfort value within the context of what you wear "the rest of the time." If you're only wearing a necktie when you have to do so, in response to certain work or social expectations, ripping the thing off of your neck at the first opportunity and not looking at another until you again "have to" wear one, it's reasonable to say that it's not a very good expression of either comfort or individuality.
If you don't believe me, just take a look at the author's headshot. When off duty, he apparently expresses his individuality through facial hair and an open collar.