Maybe. But let's look at it this way: let's suggest the Cubs are going to look to add one impactful contract and one major SP in this market (based on budget limits, luxury tax, etc). Glasnow works perfectly with Ohtani; he's not going to be break the bank via trade, and he'll be gone after year one. But if the Cubs lose out on Ohtani, perhaps it makes more sense to put the money into, say, Yamamoto, as the big add and then trade for like, Pete Alonso. Could they in theory trade for Glasnow and sign Yamamoto? Yeah, sure! But I think we know the Cubs probably wouldn't.
The Cubs post-Ohtani could have wildly different paths in how they handle the offseason.