I am talking about the kind of people who just "can't be bothered".
So without interviewing them individually, how can you tell which are which? Life is surely too short to worry about other people's reasons for doing things differently from the way you do them.
What matters is people being disrespectful of others because of the way they look, or their age or their colour or whether they are disabled in some way. That still happens all too often, but I think it's probably less common than it has been in the past, at times when maybe people were a bit keener on wearing hats and taking hats off at the customary times, and standing for national anthems and such.