To be fair EZY are offering EDI-PFO from this Winter. It does, of course, all come down to the availability of the A320's. More will be delivered over the next few months and it is the A320 that would be required to do such routes as the EZY 319 examples do not have the capability.
That said, just because Easyjet isn't launching Scotland-Canaries doesn't mean that they are "anti-north". Although it's certainly not rare to have pax from Scotland do make their way to MAN to use such Easyjet routes.