It's time to support it.... Telus does since a few months already and the feature is supported by Google's Phone application since years ! It's a shame to pay $7/month for such a basic feature.....
I've tried everything and I even got the help of a tech from Google. You should check with your team, I've contacted the wireless support and they told me there is currently an issue with RCS for Pixel 2 and Pixel 3 here is the ticket number PT006176...
Video calling is supported, Rogers just needs to turn on the switch... It's so annoying when you think that a 3yrs old phone like the LG g4 has this option enabled and not the latest flagship of Google...