Powered thread router devices (FTD) choices in Canada - Eve Energy?

Thread uses the same frequency and technique as zigbee.
You should add sufficient Thread routers if you want to cover a (large) home.
As rule of thumb, I’d say 4 meters max between any of these.

Very useful zigbee info (like, adjust your 2.4GHz wifi and Thread channels to minimise interference):
https://community.homey.app/t/advanced-zigbee-troubleshooting-on-homey/115930

Offtopic:

With all due respect, but that’s just a marketing yell of Eve HQ.
Just like “Homey is the last hub you’ll ever need”; it’s meaningless, it’s just some words.

Imho it’s still best to check experiences with other users / this forum, especially if stuff is 100% compatible with Homey.