Not real sure of the value of extreme flexibility, but from what I understand, too much flexibility could be caused by several reasons and can leave your joints with too much range of motion that you have to control in order to get in the proper position. To much or not enough- still doesn’t change the proper positioning of a skill, but I’d think that more is better so you can atleast get there. A fitness blogger (Joy Victoria) has dealt with too much mobility and flex in her joints and mentioned what a pain this was to manage. I don’t have enough flexibility in most areas and I so desire it!
I wish I could do splits too. Doubtful at my stage but I have made HUGE progress with mwod. It’s like an owner’s manual to my body! 🙂