I noticed them around the former Nortel HQ. They were there in the 2007 streetview map data so it's very unlikely to be cellular imo!
Google says it's Norris Glen rd but it's actually paxman road.
https://maps.app.goo.gl/kDKzVwRTNMrQCkKSA
https://maps.app.goo.gl/kjGU7RxzKwgQfZtm9
I noticed that it seems each of the former cities in Toronto label poles differently, I noticed there are almost no concrete poles labelled in Etobicoke!
I'm curious why this is, and seems to continue to this day even in new installations.
I noticed they've torn down part of the parking lot at the ikea, I tried to search if there were any site changes or anything here but didn't see a peep. It looks like they've been rehabilitating it so feels weird to see a section torn down!