You're talking about social etiquette and in this example she is showing none by not using her words to communicate a simple thing. There is no communication from her. And to say "she was already telling him" is bullshit. It shows complete social infancy to not be able to just tell someone the deal.Thing is, she was telling him she wasn't interested in seeing him anymore when he stopped answering him and stopped arranging meetings with him. It's not particularly complex. If a girl stops answering your messages while still being active on her phone, then SHE'S NOT INTERESTED IN YOU. It's not rocket science.
So if you see all that and despite her not calling you anymore and reading your messages and not answering and not answering your emails and Facebook pokes you still demand her to take action and tell you what's up, the issue isn't with her being unable to communicate the message but you demanding to dictate the way she does.
The issue isn't "How could I understand that this woman who is completely ignoring and avoiding me doesn't want to have anything to do with me?", it's "I demand that you explictely tell me it's over".
There's no communication issue here, it's a matter of social etiquette.
Reminder that I'm not talking a couple dates. I'm talking about something more like OP's situation here. You're creating this example where a guy goes on a date once or twice and then obsessively tries to contact the girl when it's clear she's not really into him. I'm not talking about that. I'm talking about dating someone to the point where you both have expressed that you are very much into each other and want to see things develop, emotions and intimacy are involved (as what tends to happen 2 months in) and then just deciding to vanish on the person. It is absolutely rude and childish. You can say it's a thing that happens and that it's good to try and move past it but to actually try and justify it as a good thing is absurd.