No, generally these statements are made simply to sell you new equipment.
Manufacturers, retailers and salespeople need to sell you stuff to stay in business. Sales staff are generally paid a commission. This reward for selling creates a conflict of interest inescapable by all but the most ethical salespeople. They need to sell you new equipment and have you believe that new gear is better. Otherwise, everyone’s out of a job, aren’t they…?
By the way, these ethical salespeople exist, like my friends Simon and Tony @ Douglas Hi-Fi and Pierre @ Revolution Turntable. Just make sure you ask the hi-fi store guy what turntable he owns, just to ensure there’s some credibility to the advice you are being given.
A classic example of this ‘upgraditis’ is found in home cinema equipment. Remember 5.1 audio? It worked well. Then we went to 7.1, 7.2, 9.2, 11.2 etc. Ever wondered what happens to the quality of amplifiers when you cram more and more of them into a chassis? Ever wondered why your old home cinema gear is worthless after a few years?