The thing is that Linn Sondeks were almost an ideology along with Naim. It was all about Pace Rhythm and Timing. The ideology was challenged by the likes of Roksan and Pink triangle in the UK. The rest of the world woke up to the fact that for all the mods you make it is an awful lot of money for what you get.
They aren't particularly fashionable either. Nobody else makes metal platter boxed wooden plinth decks anymore. Most decks are very skeletal now and have far more of a wow factor - that's perhaps why Michell Orbes' have prospered along with SME's. Not only that but people like the idea of DD's and Idlers.
Personally, as I said earlier, I personally think they sound great and I'm sure I can spend many an hour listening to one, but I guess they are just not cool, nor loved by the press as they once were.
I find that vis a vis the technics SL1200 it's a funny story. That was very much seen as a low-end DJ spinning deck - then a few clever clogs re-plinthed a re-armed the decks and suddenly people realised that actually they were pretty good. If you read other threads many think they were sent from heaven.
Me - I'm a bit naughty, and have too many TT's in my collection that need to be set up - if I had the time and space I'd take a punt.