Anyway, it's more of a minor annoyance and a talking point.
I would say the same about football too, although the numbering system broke down way before the introduction of squad numbers in 92(ish?) because formations and positioning are much more fluid.
For the sake of argument, I would also prefer teams to stick to their proper colours (i.e. Warrington in primrose and blue should only really wear an away kit at Leeds and sometimes Castleford and Catalans if they have shirts with lots of yellow on) but I realise that that doesn't sell shirts, as fewer people buy a shirt that might only be worn twice.
And then there was the Challenge Cup final debacle against Leeds where the referee should have made someone change to a different kit to avoid a clash, but no-one did
Bizarre.