Navaleye,
I suspect you are spot on, as is Glojo.
Nothing is all-aspect stealth, not even a RAM-coated rugby ball, it is about 'how much stealth do I need'. The combat edge that sufficient stealth brings is part of the allure of 5th Gen but not all of it. Now add in the phenomenal SA, networked everything, jaw-dropping weapons capabilities and the potential for as-yet-untold growth and you start to appreciate why the UK should be in that game. It costs to be in, it is sometimes frustrating and many rightfully ask 'why' but the US/Brit relationship is a big factor in this programme through choice. Pulling out cuts off not just our own noses but that of others. It will drive cost up even more and introduce more risk where enough exists.
Just an opinion.