Perhaps, but the issues are (a) whether Floyd would have survived the arrest if not for Chauvin applying his full body weight by knee to the back of Floyd's neck for nine minutes; and (b) whether the four police officers could have safely affected the arrest of Floyd without the use of a neck restraint for nine minutes.
From the the videos that I have watched (and I believe that I have seen all of the videos that have been publicly released), the use of a neck restraint may have been reasonably necessary for a very short period of time to maintain control over Floyd, but not for nine minutes, and certainly not after Floyd shows signs of distress. Floyd was clearly impaired and could barely stand on his own, and there comes a point where he is face down on the ground, with his hands cuffed behind his back, and clearly, he is not about to flee. Although there might have been a brief struggle just prior to that point, once he is on the ground, I don't see the need for more than a brief neck restraint, if that, with four cops standing over him. Based upon the videos that I have seen, Chauvin is guilty of manslaughter or perhaps criminally negligent homicide as a lesser charge.
I only saw one brief video. Am not making a judgement one way or the other. That is for a jury.