Well look at it this way, the UK is a sovereign nation state, the EU is only a trading bloc, it's less reasonable for them to ask us to have a customs border within our state than for them to put one in their bloc. And on top of that they're asking for £60bn and fishing rights with nothing offered in return. Nobody can possibly see that as reasonable.
The ROI/NI border is owned by the UK and ROI, if they chose not to put a border there the EU has very limited options aside from overt and lengthy posturing, other than the options I mentioned here.
DA never claimed such status for Rafale. They've merely incorporated elements of stealth thru EW & partially thru geometry. Having succeeded in their modest efforts, Eurofighter seems keen to emulate it. Why's that so hard to understand? Who said they succeeded in anything, all you have is blogs...
www.strategicfront.org
The Good Friday Agreement is very much an EU problem not a UK problem, since we will continue to abide by it and I assume ROI will too.