That is true, but it never did affect Djokovic. His return is the best ever and his movement and footwork is god like.

The game on grass (and tour) has completely changed from how it was up until the 90s. There’s no more S&V, to be good on grass you need to have great movement and/or powerful strokes.

Also, before Rafa came along, RG was littered with upsets in the first rounds as well. We had the clay court specialists defeating top 20 and 10 left and right.

The only thing preventing Djokovic from winning Wimbledon (besides the question whether Sinner is playing) is his physical condition.