One example a 5 x daily verses a 3 x weekly, if the flights are still full, does this really matter?
Yes it does.
To keep it simple say they make $1000 on each flight. Your example is the difference between $3000 a week profit and $35,000 a week profit.
Which profit metric would you prefer to be managing?
My secondary airports comment is in relation to people suggesting “they should” change their model to city pairs.
By SWA do you mean SWZ? Since it is not built yet we should probably leave that out.