Yes, absolutely.
If WPA had a defensive component, they would have more minuses than other players. The Oilers have been pretty porous defensively with the lead while McDavid and/or Draisaitl has been on the ice.
In the playoffs, from 2020-2025, here's how the Oilers performed at 5-on-5 with a lead.
With 97 and/or 29 on the ice:
30.8 SF/60, 3.78 GF/60, 12.3 SH%, 28.5 SA/60, 3.57 GA/60, 0.875 SV%
No 97 or 29 on the ice:
24.7 SF/60, 2.11 GF/60, 8.5 SH%, 30.0 SA/60, 2.19 GA/60, 0.927 SV%
With the lead, their goals against and save percentage have been fine with their depth forwards on the ice. It's been with their star forwards that they've struggled to hold leads. I won't say that Skinner played well, but his forwards could have done more to help him out.