It’s obvious he is kneeling for the anthem/s
Watched him play many, many times when I was a kid in the ‘50s at Kezar when he was QB for the ‘49s....
Those were the days. I loved the NFL in the 60s.
Y. A. Tittle looked older than he was due to being bald and he probably played a season or two past his prime. One of the greats.
Even the wild ones like Max McGhee, Joe Namath, and Paul Hornung were not disrespectful.
The best QB I ever saw was Bart Starr but that was partly because he played in the days where the QB literally ran the team on the field including calling the plays.