What's the point of reviewing?

The word you are looking for is “moot.”

Have you ever experienced listening to the same component in a different system and having it sound completely different?

Plus the room is 80% of what you hear. When that sank in, I gave up reviewing.

Exactly...

I did these experiments and it is my opinion...

It is why reviews dont have meanings in a singular way at all..

There is only meanings in  statistical analysis of all reviews on each separate acoustic factors...

Have you ever experienced listening to the same component in a different system and having it sound completely different?

Plus the room is 80% of what you hear. When that sank in, I gave up reviewing.

+1 @chowkwan 

Not to mention identical hearing and knowing the reviewer’s musical values are identical to yours. I see a big problem therefore you are totally stuck when it comes time to either purchase equipment due to shops closing and the difficulty of taking equipment home to audition in your space.

I hope you are not being serious with your statement but just making a general observation of how everyone’s musical journey and level of enjoyment is very unique. Find reviewers who you value their opinions and seem to be close to yours  and use that as a starting point but yes the final verdict is up to you to make in your listening space.