Fully agree with you on that! It is disrespectful not communicating anything, just wasting others time. Not even a cheesy excuse why it not happened. And no, this is not just a dutch mindset. In my opinion it is the minimum of showing respect to each other. Especially on a social platform, just like you said.
We will see where this is going! Thanks @exyle for your thoughts about it.
Greetings from Barcelona