I just went ahead and asked for a bit of clarification...
Substitutions can be impacted by your opponents tactics and the state of the match
The rate of stamina decrease is impacted by substitutions and how long players play.
So in theory your opponent can indirectly influence your substitutions via their tactics. But there is no direct influence on your stamina consumption.
2x NBBA Champion: S55, S56. 3x USA Cup Champion: S54, S55, S56. WR for longest home streak ever at 11 in Season 47.