Why is anyone even listening to Len he's a silly old fart

And for a while he's been acting daft ,there's always times where a couple will dance perfectly and then he suddenly has an outburst and says he didn't like it because it wasn't a proper dance technically
or the style wasn't his "cup of tea"
i actually laughed when he had a go at Helen's Rumba the other week
and this week Anita's Rumba was amazing and he complained about it accusing them of not doing a proper rumba or something
i'm convinced Len has a mental issue i dont care what anyone says
And the other judges are no better and they behave like they have bipolar