You realize that opponents have the puck plenty even when McDavid is on the ice, right?
Christ, you make it sound like Edmonton plays keep-away & has the puck 100% of the time whenever McDavid is out there.
The difference in possession between top and bottom is something on the order of 55% to 45%.
The guys below 45% tend to be fourth liners playing 8 minutes a night.
So even if you're great at possession, you can be a liability if that 45% includes a lot of HDCF b/c you're caught out of position and allow too many odd man rushes, or don't work hard to back check and leave your defense out to dry.
Nor does playing great defense preclude offense, just look at Selke voting (which is generally the best defensive players with good offense!)
winners: Bergeron (5), Barkov, Couts, ROR, Kopitar (2), Toews, Kesler, Datysuk (3), Brind'Amour (2).
Though there seems to be a balance, but this may reflect usage as well as skill, i.e., if you're really good defensively, you may be used more in shutdown situations and less in offense first situations.
10+% of Selke votes and > ppg:
2021-22: Lindholm (2), Barkov (3)
2020-21: Barkov (1), Stone (3)
2018-19: Crosby (4), Barkov (5)
2017-18: Kopitar (1)
2015-16: Thorton (5)
2012-13: Toews (1), Datysuk (3)
2008-19: Datysuk (1)
2007-08: Datysuk (1), Zetterberg (3)
2006-07: Brind'Amour (1)
2005-06: Alfredsson (4)
2003-04: St. Louis (4)
2002-03: Forsberg (4), Modano (6)
2000-01: Sakic (2), Modano (3), Elias (8)