I'm a full time professional photographer. Canon's apparent abandonment of the EF mount is in my view premature.
I always been an early adopter, and was one of the first to jump on the EF system from the FD mount over 3 decades ago.
Problem is that for my work, mirrorless is not ready yet. My workhorse is the 5D Mk4. I have the R5 and hate it. Cannot stand it. It is too small, it eats batteries like chocolate cake and it simply doesn't give me any advantages over the 5D Mk4 in my line of work. The R5 will be a great travel camera though.
Lenses are also lacking. I much much prefer the 100EF macro over the RF100 macro. Again it has features that are superfluous for my needs, while making it unnecessarily heavy, and expensive, while distance between front lens and subject as close focus distance is worse on the new lens.
I just bought the RF 14-35mm L. It has shocking barrel distortion. I read that DPP will correct this, but DPP will not install on MacOS for a reason, and is a common issue I found out.