I know some old timers and I'm talking Rutherford and Knorr era and these accept the changes as "coming from Jehovah." You could literally tell these old timers anything and it will be accepted so long as it "comes from Jehovah."
So in a sense, probably a welcomed change. Some of them probably still remember the (suicidal) 7 day conventions.
But in the end, it's like sir82 said: "Where else would [they] go?"
There's so many old timers that have invested so much of their life to the org that even if Jesus came down from heaven and told them they were worshiping demons they'd probably think it was a demon taking the form of Jesus. No joke. That's how far gone so many friends are. It's sad.