Things aren't always as black and white as you try to make them. For the most part I agree, but there is the 5-10% of cases that fall into a gray area...
I mean you are making it sound like its a whole lot of work to hit a chick up you haven't talked with for a few weeks and try and set something up. That's what 2-3
texts max? A whole 5 minutes?
Things happen, situations are fluent at times, and in some cases as time goes by I've found the woman feels you aren't interested in her because she hasn't heard from you so she won't bother contacting you either.
Persistence can be good at times, Desperation on the other hand never is.