Well of course they are. We're just having a discussion on the issues. I think that's allowed on a discussion forum!
Very true, and of course all the more relevant in these difficult times for operators.
The financials quite rightly take priority, but there's no getting away from the fact that it can result in prioritising a captive audience over optional travellers, and environmentally it's not good running Euro III buses round all day when Euro VI buses are sat doing nothing.
As an aside I'm sure @Onthebuses is reading all this and having a chuckle.