People say lots of stuff and make jokes all the time on twitter land. There are lots of jokes about hating everything like Morrissey and many others. These 2 or 3 posts don't mean anything. Could be a joke , could be that guy who dresses and looks like Morrissey ( I forget his name ) and so on.
Morrissey showing up in a gig I could actually believe. Morrissey smashing someone's iPhone or trying to get into a private party, I really don't think so.
Between some random guy writing on twitter or a quote by cliff Richard on a Q& A attended by fans and journalists, I'm sorry but I tend to believe the latter.