I think there are several issues here but the Moldies just cannot win the argument because their position is untenable.
Yes it was FINE if it had been a "small group" of a few friends (which is what I said to Twiglett when I left) but reproducing the structure of Mumsnet, taking the "top 150 most popular" Mumsnetters across to the new board, and even setting up a "Tech" (WTF? That is like setting up a 'Justine'?) is just OFF. No, it's not illegal, but it's just NOT CRICKET. If you had desperate needs that MN weren't meeting, you could have requested that MN looked into changes such as off-board messaging or private topics. Not a brain-drain of the most experienced and prolific posters, which is effectively what it was.
You also can't expect people to take an apology seriously, when you are continuing to do the thing that is causing hurt that that you are apologising for. It's not really an apology, is it?
And you also can't say on the one hand "I need to stay on Moldies because that's where lots of my old, good friends are" while maintaining the position that Moldies shouldn't hurt anyone, because this is just about chatting on talk forums and not about proper relationships. Those two arguments are not logically compatible.
MN is much nicer if you stay OFF this thread btw. But I suspect this thread will run and run I'm afraid.