Am I all alone in thinking that establishing oneself in a career is usually a higher priority than getting a mortgage? For those to whom a mortgage is more important there are other career options, but if the aviation bug has bitten you, then go in with your eyes open knowing that the NetJets Cadet FOs can pay off their loan in 6 years while regular OAT students might take as long as 11. Who will be able to get a mortgage quicker then?
The difficulty here is every one is in different circumstances. I suspect some NetJets Cadets already have mortgages for example and are in a position to use their own property to secure their loan. Some may have spouses whose income contributes to the household finances. One size fits all advice, doesn't necessarily fit all, so take what you want from it.