And no, us humans are not victims of our biology. Since one the few things in the bible I actually agree with, is the whole "god gave humans free will" bit, as intelligent, self-aware animals we can control our actions to an extent. Failing to so actually is a problem, I agree. But that is an individual problem, not a universal one.
Call me crazy I suppose, but wouldn't it be a good idea to give people with problems good advice about how to solve their problems? Maybe some sort of community they could go for for good, actionable advice?
Because if you walk through what you've just said slowly, it was (1) identified that finding a partner is easy for people who don't have problems finding a partner, and (2) anyone who is having problems is on their own, no need to help them.
The thrust of the thinking there lacks a certain empathy. Plan B is being a bit gentler and explaining what they are doing wrong to them using clearer advice than "don't be an ass". That doesn't mean anything concrete and it isn't actionable. It also isn't true, lots of asses have no trouble holding down a partner (usually figuratively, occasionally literally to the general horror of us all if it gets uncovered).
And yes, I insist, not being an ass is a great basis. Which requires knowing what makes someone an ass, true. If people fail at knowing that, well, issues at dating are more of a sympthom and not the root cause.
Also, yes, at the end there is only so much others can do for you and help you with. Being able to be self-reliant, and being able to ask for, and accept, help are actually rather attractive traits. As is taking responsibility, first for yourself and then for others.
Also this list of points is probably wrong. Particularly "Accept yourself as you are and others as they are" is mutually contradictory to things like "Be polite, accept a no as an answer" for many people. jiggawatts is pointing out that if people want to improve themselves useful advice is hard to find. Telling someone who knows that they need to change that they are an ass, need to stop that but simultaneously that they need to accept themselves is unhelpful.
In fact, finding the balance between what parts of yourself to accept and what parts need to change (and why) is a complex challenge that is beyond the abilities of most people. The average human just keeps doing what they do unless something traumatic happens.