question : are your replacement tail lights street legal in your area as the originals also showed from the sides ?
I honestly don't know for sure. Look legal enough to me though. Lots of vehicles I see on the road have taillights that aren't visible from the side. Should be fine
Edit: I just looked up the motor vehicle act and it looks like these lights are acceptable.
Tail lamps
4.15 (1)A motor vehicle, trailer or semitrailer must be equipped with 2 tail lamps, mounted on the rear of the motor vehicle, trailer or semitrailer, that are capable of displaying only red light visible from a distance of 150 m to the rear on both sides of the motor vehicle, trailer or semitrailer at an angle of 45° from the longitudinal axis of the motor vehicle, trailer or semitrailer.