I don't think there is really an appreciable difference between TW not caring about MP and them viewing MP as low priority, at least not in the outcome, which is MP becoming stagnate, not improving and dying. I'm also not sure how it's productive to come into the MP forum section and try to reason that MP being neglected is okay or reasonable because SP is more popular. That won't do anything to quell MP fans' frustration and is reminiscent of the arguments you occasionally see by toxic SP fans that say MP should have been entirely removed in Bannerlord to focus on SP.
I was trying out the deflection too and this does seem to be how the perk is implemented. It effectively turns your two-handed weapon into a long but very narrow shield while blocking. It seems very difficult to make use of it intentionally since your weapon covers so little space, so it might be better to think of the perk essentially as just negating a very low percent of arrows whilst you're blocking.
There's a noticable difference between the crouch animation and pick-up animation. The pick-up animation has the right arm extend to the ground to pick-up the item and bends the back to achieve this, whereas the crouch animation keeps the back straight and bends both arms keeping them at waist level. Your clip looks like the pick-up animation to me.
I think they considered Warband MP a failure because it was greatly dwarfed by the SP playerbase. I believe Callum said that no one was actively monitoring MP player counts before he joined the company (in 2016 or 2017 I believe), so his data came from after Warband's MP heyday.
I never said it was the reason for it failing, only that it used a similar system and that I disliked it in that game. The locking system was there to make it possible to turn and maintain your block direction and it is the only real solution to the major issue with this kind of blocking and that fix is still less than ideal for me.
I've noticed this too, but figured it was probably lords entering tournaments when they're not fully healed from battle.
I haven't noticed much change in skirmish match-ups while solo queueing either. The game still regularly seems to stack one team with clan kids versus a team made up mostly of players who queued up thinking, "I wonder what skirmish is?"