The Linn forum was quite open in it's views, many issues were covered and not all who posted there owned a full Linn system, maybe only a deck or speakers or in some cases were looking for information on the start of their HiFi journey.
If I recall there was only one poster who was banned from the Linn forum, at least as far as I know.
It was well moderated, like PFM, and people came and went as their questions or points were answered or made.
I think like any forum that is run by a manufacturer it will be mainly made up of members who own or want to own that equipment and so will more than likely have views on that product range, against other manufacturers.
I think Tony is right, in a few months it will all have settled down and the people who were members of the Linn forum will either join other forums or maybe just stop being a member of any forum.
Whatever, there is a wealth of information held within the members of the now ex Linn forum that would be of benefit to others, it would be a pity to lose that.