I will say 'oh bless him/her' usually about a child or maybe a family pet, but I'm quite sure I would never say it about an adult, because it does sound patronising, I feel. I use the phrase in the same way that I would say 'oh love him'. But the use of 'bless' and 'enjoy' is lazy.
Equally, I hate the way people (politicians, businessmen etc) will say something is 'key' to, e.g. success, survival etc., rather than 'the key'.
I knew someone who used to say, if there was a problem or something that needed to be attended to, 'I'll ask (x) to deal it' or 'Will you deal?', always omitting the 'with'. SO irritating. I wanted to ask her if she was playing cards.