My point is what Basel called 6th gen Tempest, according to ADA it's 5.5th gen.
No one knows yet if the Americans will go for hypersonic capability or not. No one knows if PCA and F-X are in fact two different programs.
And the Russians define 6th gen as hypersonic or near-hypersonic jets capable of achieving near space altitudes. That's how they are designing the Mig-41. If the Russians make such an aircraft, then Tempest, FCAS, AMCA etc will all be 5.5th gen jets, which is according to ADA's definition.
So cool your horses, if Tempest becomes 6th gen, then the Mig-41 will become 7th gen. But defining Tempest as 6th gen is just marketing coming in to play, it's not based on technical specs. A generation gap should generally have asymmetric capabilities between newer and older generation aircraft. If you put VCE and unified avionics on the F-22, it will become competitive with the Tempest. That's not a generation gap.