Linear tracking turntables, whatever happened?

Fully understand what Frogman means by "... fundamental difference in sonic presentation ... more realistic both tonally and ... in ... soundstage ... wide open ambience and stable layering of instruments ... sounded more realistic ..." Well said.
IMO in short, the best linear trackers produce less artificial sounds and more music. They are not perfect yet but very close.

I have owned only B+O linear trackers over the last 40 years and have been very happy with them.  Very elegant looking, simple to operate, no fiddling and extraordinary sound.  I started with the original 4000, I believe it was called.  I modified the arm to take a conventional moving coil cartridge and was very happy until the TT finally expired.

 I replaced it with a TX2 which has some issues,  due to its lightness but which were resolved with proper feet and the use of sorbethane as damping on the body and even the platter.  Sorbethane is much underated because it is widely misused.  I use small , thickm dense sorb, glued in place and covered with layers of tape so that it acts as  'constrained damping.'  This makes it far more effective than the usual sorbothane footers. 

The B&O cartridges are no slouch  With the TX2 I bought the second most TOL model  that B&O sold and find it more than a match for my older moving coil. 

Sat down to read Stereophile and one of the first articles was of a new tangential tracking pivoted arm.
Made by Klaudio and coming in at either 9k or 12k it looks like a major mechanical Marvel.

Some other brands of current production tangential arms noted were;
Bergmann , Clearaudio, Kuzma , Reed, Schroeder, Thales, etc.
Still very much alive today.

https://klaudio.com/tangential-tonearm-12-inch-equivalent-kd-arm-ag12

... looks like a major mechanical Marvel.
A gold plated Marvel. Costs a fortune.

LOL

I´d rather buy two fully serviced vintage Citroën XM. Other for my better half.
Humour you got : ) Well, I knew it. Carry on.