I first thought he overreacted, too, but then came his second post about it not being a boycott-like strategic move, but a personal thing. Which is fair enough, I guess its due to a feeling of helplessness.
I was a sad about it, because I feared that this will remove all channels of communication between him and the public, but the (I think very lovely) text on neilfinn.com suggests the exact opposite. I mean, newsletters and some means of engaging with us... What more do we want?
Personally for me, this might be a lot better than twitter and Instagram, since I don't post there (just reading), and there was hardly any exchange with him going on anyway. (And I might not have to scroll through 80 people drooling over his hair and/or cardigans, or tagging him in some repetitive rant about Lindsey's firing... Sorry off-topic, but the neilfinn hashtag on both platforms has become quite bizarre since Fleetwood Mac.)
I think we can trust Neil, he's not the "I have no interest in engaging with the public any more" type.
This could be brilliant!