Consistent loudness is a general marketing strategy. The R5's overheating chorus is an example.... don't let the truth get in the way of a good story.Loudness is overrated.
People have complained about Canon since the 1DX.
They have lost some market share since then but they have pretty much maintained what they have now.
On the other hand, they stated publicly that they want 50% of the market and have yet to achieve that again.
Forum commentators are still mentioning it >3 years later in a derogatory way. Facts will not change their opinion or their future statements. It is confirmation bias that their choice of camera system is the best one.