Originally Posted by
Rigga
The original design of MRCA / Tornado was for twin vertical stabilisers but this proved too challenging and/or expensive - so that huge monolithic tail was built instead.
Yes, I'd attributed the vertical tail size to be more related to the short moment arm aft of the CG, rather than being influenced by fuselage masking at high angle of attack.
Interestingly some of the Typhoon EAP/EFA were just the same - twin tails on some including a fullsize mockup.