Wow! This is pretty crazy.
More accurately, entirely due to your impatience. You can feel any way you want but there is zero objective evidence that Canon is losing its commitment to the professional and "prosumer" (whatever that is) base. If you want to look at facts, everything about Canon's imaging division strategy and public statements regarding the same shows that they are concentrating on the professional and enthusiast markets.
You can imagine anything, including flying, rainbow colored unicorns. Actually, flying, rainbow colored unicorns are more likely than the scenario you are imagining.
I'm going to ignore the silly use of "tepid" for now and if I have the strength and time, I'll address it in a subsequent post. But, let's unpack the rest of this statement. Canon has released spectacular RF lenses, they have a mature lens line that they have publicly committed to continuing to support and, at the enthusiast and professional level they are releasing new DSLR bodies at roughly the same pace they have historically followed, while also releasing new mirrorless bodies, all of this in a market that is contracting and you somehow define this as a "slowing" release schedule that you take as evidence that they are less committed to the most profitable sector of the photography market.
What exactly does this being a RUMORS site have to do with your comments? Perhaps you are equating rumors with opinions? And, yes, everyone is entitled to their own opinion, but if you are going to put out silly opinions mixed with paranoid, unfounded fears, you can expect people will respond with great derision.