There's nothing wrong if things in your life take priority over Aikido, just be honest that they do. There's nothing wrong with that. and there's nothing wrong if I prioritize training over other things. We all do it, we just need to be honest with what Aikido is on our lives.
From what I'm gathering from what you've posted your position is that a person who trains only twice a week is less committed to Aikido than the person who trains three times a week? Even if, hypothetically, that person has a family that comes first and the other person has no outside commitments?
Have you considered the possibility that for some people training two days a week is far more difficult than it may be for another to train four or even five days a week? Doesn't that show greater commitment on their part?