Semantics. Floyd's resistant actions led to him being restrained and placed on the ground. He should not have been restrained in that manner for that long and while the outcome was dreadful...no, it was not brutal in that there was no apparent intent to harm him, etc.
Brutality, to me, implies intent to harm and I don't see that in the videos. I see a lack of recognition and even stubbornness in that Chauvin rebuffed the suggestions of the other officers to move him to his side, etc.
If someone drives through a red light and kills someone doing so...is that "brutality" to you? Dead is dead and it is quite serious of course, but it was also an accidental death, not a purposeful one.