It is sad that Canon no longer wants to give us the choice between DSLRs and mirrorless cameras. After a while they will proudly claim that most people switched to mirrorless and say that acceptance is very high, but is it really accaptance if you are forced to switch, because DSLRs are no longer developed? It reminds me of Microsoft proudly claiming how many people switched to Windows 10. Or some dictator claiming 95% percent of votes in an "election", although he was the only candidate. Or 16:9 TVs for example. After years I still hate that format and prefer the ration of 4:3, but I was more or less forced to move to 16:9. Or cellphones without an replaceable battery. Most people loved the option that they could replace the battery after two years or so and get the whole battery capacity again, but we were not given a choice. Luckily the EU might make replaceable batteries mandatory again, but the EU probably will not save DLSRs :-(
The only real advantage of mirrorless cameras is the shorter flange distance that makes new lens designs possible, but I probably would not buy those overpriced RF lenses anyway and instead use an EF adapater and therfore lose that advantage. All other features of mirrorless camera could be incorporated in the live view mode of a conventional DSLR for those who really want a mirrorless experience. Cameras like the 1D X Mark III already work like a mirrorless camera in live view mode and it would even be possible to attach an external EVF.