For me, Bose became neutered in the late 70's , sort of like the Ford Mustang during the OPEC crises. Their flagship vintage gear were built to last generations and delivered on their hype. I own what I consider their best stuff : Bose 1801 amp, 4401 preamp, 901 series I & II, super-rare set of 2201 speakers, and even their Spatial receiver. I will defend the above equipment on both build quality and playback dynamics.
On the other hand, since the 1980s, Bose has become the face of "branding" in the audio world. From their 30 minute infomercials on late night TV onwards, the population has been swamped with how great and innovative the Bose brand exemplifies. AD nauseam basically to justify a $500 cd alarm/clock radio. People
see enough commercials without counterpoint, and they will start to believe the hype.
This creates a backlash with people who may know better about the audio world VS the general population fed on the steady diet of Bose commercials.
From their "Wave music systems" to their current "Videowave" TV systems, Bose has become all hype. More style than substance. They still produce and rely on their 901s for street cred, but most of their modern satellite/sub systems would never make it to the main listening rooms of discriminating audio enthusiasts. A sad thing really, I truly believe that Prof. Amar Bose was an innovative man, thinking outside the box in the 1960's to create speaker systems that reproduced music through a reflected sound field. Now his name represents the company which no longer pursues research in the classic sense, other than the pursuit of commerce. BTW to his credit, prof Bose donated all his wealth ( over 1 billion ) to MIT in 2011.