I have branded Linkin Park as a band that became famous via their fanbase, therefore they should be able to take some criticism from that said fanbase. I never claimed emotion was not necessary. Though, on that note, I would say "emotion" was kicked out of the window when they put finesse into their music to sell records 10 years ago. All of that gets eradicated with pitch correction, tempo alignment and all the other mastering that they accomplished.
I'm not the same person I was, at all. However, if I was in a band with as much success as Linkin Park, I would at least consider what my fans would want out of love and respect for them. I don't recall anyone (on these forums) claiming that it was mandatory that the band should go back to their original sound or they should quit. All I have seen is "I wish they would go back to the Hybrid Theory sound", which is a suggestion that the band may take into consideration.
You are acting as if they evolved into this Super-Band that fends for themselves. I'm pretty sure you can guarantee that they take all forms of criticism to help define what they want to do as artists.
Like you said, art is an expression but there comes a point where you are making it for the sake of loving what you do...or you are making it to share with others and get feedback in the process.
When they decided to sign to a record label, it's pretty obvious which choice was taken.