F-22 can launch weapons from its internal weapon bays while supersonic as well, in fact they were among the earliest weapons fire testings done for its integration tests of different weapons during its EMD phase.
(E.g.: F-22's first guided AMRAAM test fire was in September 2001, and the first supersonic guided AMRAAM test fire was a year later in November 2002
)
So I'm not sure why you write of the ability of launching weapons from internal weapon bays is considered something unique or exceptional. If anything I would argue it is a rather rudimentary and basic capability that should be demonstrated rather early on for 5th generation aircraft during their development/EMD phase. (After all 4th generation aircraft and even 3rd generation aircraft are capable of deploying weapons while supersonic; it would be a rather concerning backwards step if 5th generation aircraft were not!)
However the F-35 is indeed off topic. I think the topic of the principles of A2A combat that geloog and others wrote about is not uninteresting so if people want to continue talking about the merits of certain capabilities and design characteristics of aircraft, missiles, avionics and so on, they can do so in a new thread.