Evil Emperor
Taller Than Stalin
High End means high price , you can not change the laws of physics, my system could probably be described as mid-fi but I have not heard a better one irrespective of price and believe me I have tried, e.g. the IMO over hyped for SQ Devialet and expensive PMC speakers etc. all auditioned in my listening room.
Yes, but your system would be considered 'broken' by most people's standards.
Where the salesperson might have a point is people tend to go a bit wayward over time. Your system would be unlistenable to most people, but you have grown so acclimatised to it that normal things sound wrong to you. You might need to say to someone that they aren't listening properly if what they think is good is so far off kilter they wouldn't know what good is if it walked up to them and sang live in their face.
It's like being punched repeatedly in the face. After a while, you become so used to being punched repeatedly in the face that you think it normal and when you aren't being punched repeatedly in the face, it feels wrong.
That might be a bit extreme, but having heard the Aurousal VSx speakers you think so wonderful, being punched repeatedly in the face seems like the better option.