That is one way of looking at it.
More realistic view being, for one, because Rogla wants to? As in the end that is all it really takes. An assessment from Rogla about health and desire to do the Olympics.
From sports side of thing i don't know on why adding Rogla in would reduce anybody else chances. It's a small team to begin with and as such not able to control the race in any meaningful way. Moho likely being in equation to try something, just as Pogi. Tratnik likely the most capable of actually doing something for the team. Saying Luka can do more, for team as a whole, then Rogla. IMHO no.
As for winning or winning a medal. It's a one day race hence at such races Rogla has all the tools at his disposal, inclouding going all out on some smallish hill or sprinting in reduced bunch. Here there is really nothing holding him back, when needed, so here Rogla is as good as any. Lets not forget he is a LBL winner, last monument winner forthe team JV/Visma.
So what are my expectations, if Rogla goes to the Olympics. My expectations are for Rogla to be up there, at the finale. An expectation simmilar to just as any other pre race favorite. IMHO. But OK, lets wait on the decisions being made first, and lets take it from there, we don't have that much insight to talk conclusive ATM.
In about weeks time we will know.