Block pressure ? You realize that, pre-patch, he had 0 blockstring requiring stamina ? (Ex ball isn't counted here since it still work).
All his lrc weren't viable on block, if you knew the mu like you said. You could just backdash if you expected a lrc and you fucked up the pressure because b11 doesn't reach a backdash.
All he lost was armor launcher and some dmg because of lrc and stamina stuff. Well if you just end by thunderfly, you just lose between 5-10% dmg, but still a corner carry.
Now analyze this patch, all armored armors disappeared. So less wake up from enemies = go search for some mix ups when your opponent gets up, if he wake up armor, you just get 16% at max (command grabs) or make your opponent waste 2 bars.
Raiden won a strong anti poke - pressure standing tool and can now poke cancel into shocker. It's just another way of playing, no more run f12b2 b14 lrc 214, just f12b2 b14 thunderfly then corner game. Because this variation is more about corner than midscreen, instead of displacer.
