I talked to a few retailers, and it seems that the new Canon EOS R1 camera did not even get close to the number of pre-orders stores have been used to receive for the latest releases from Sony, Nikon (Z8/Z9), and even Fuji (X100). Of course, pre-orders are not an indication of how good a camera is, but sales and creating buzz are still important.
There are plenty of YouTube videos, reviews, and posts on social media describing the various issues with the R1 - they mainly include the price, the 24MP sensor, and the designation of being a "flagship" camera:
If you are still planning to get the R1, here are some pre-order links:
The long-rumored Canon EOS R1 and R5 Mark II cameras are now officially announced *UPDATED*