I have said it before but perhaps not as blatantly, the Linn is not as fiddly as it is made out to be, or more fiddly then other similarly designed decks by Thorens and AR for eg.
Agreed that if you move it around it is likely to need a wee twiddle (but so will a Thorens or any loosely suspended ((wobbly)) deck) but if set up well using the black springs and castle or nylock nuts, they hardly drift.
The bitch part is that unlike some decks, springs need adjusting from below, for which you need a jig, a table with a hole, two chairs or two stacks of books.
Furthermore, I believe that to some extent the dealer servicing of Linn may have been equally if not more about getting you back in the shop which = a sales opportunity.
Linn decks may be eternally upfgradeable (to a point) but if done right they do get better with each step and a "top upgraded model" will outperform decks it was behind an upgrade step or two ago.
To me neither of these are a downside. Typically a Linn service may include an oil change, suspension set up (replace rubbers if perished and springs if deformed) and set level and a cleaning of drive surfaces belt runs on and cleaning of or a new belt.
A rega that has been running for say 18 months that gets its bearing re lubed, belt drive surfaces cleaned and a new belt fitted/cleaned, will also sound better then before.
Linn just insisted on it, others did less so.
That simple operation btw has seen many folk who thought their used purchase (rega/Linn/Thorens/Dual) sounded a bit below what they expected walk out of my place with a smile.