@sns I think the legal position is quite clear. If MoFi states an LP is 'all analogue' or 'AAA' and it is not, they are guilty of misrepresentation. If they say nothing then there is no cause of action since a misrepresentation has to be an actual statement and does not comprehend a failure to state something whether or not the something is important, or even critical for some.
It is not a question of 'harm done' although the value of the harm suffered will be the main determinant of the amount of damages, apart from any punitive or exemplary element.
You suggest the knowledge that an LP previously thought to be all analogue is not doesn't amount to harm done because the material on the LP has not changed. This may not be the case, since the opinion of many audiophiles on sound quality is based at least partly on a psychological reaction to knowledge of the components of the system and the recording that reproduces that sound.
I have many MoFi records that are stated to be AAA and they probably are since they were all purchased more than 10 years ago. They vary quite a lot in SQ, probably because of the state of the master tapes when they were copied and the quality of the engineering. Some are amongst the best LP records ever issued. The best I have for SQ is 'Beatles for Sale' where the capture of the harsh edge on Lennon's voice on lead vocals puts him right in front of me. Magical, and I haven't heard that on any digital version.
I stopped buying MoFi partly because I have the ones I want but also partly because I noticed the average SQ was becoming poorer That will be because MoFi weren't taking the scrupulous care they did at the start. Like quite a few things in audio, the glory days are still the glory days.