@kuribo perhaps you are advocating too hard that an amplifier must be technically perfect. Alternates to perfect can sound better to some. However, I understand also your general frustration.
Where have I advocated for technical perfection? Where have I said that some people can't like whatever they want?
There is no such thing as technical perfection, but there is good and bad design practice, as well as outdated tech.
Everyone has and is entitled to their own opinions. When people start claiming they know what is better or best for others, then the bs meter starts ringing. Especially when they offer you better or best with a price attached and tell you it's not measurable and has no scientific basis, just "trust them"...