But this is the top design guy at MCU joining in and giving his opinion. Not some random forum member. That is something new to the discussion. I suspect Hot Toys will change for the better going forward and give up their obsession with giving female figures rooted hair whenever it's possible.
After this battle is won we can focus on Hot Toys casually giving figures exposed neck joints when they could change the body and make the neck and head one piece. No reason it should take until the 3rd Hawkeye figure for example before we finally got one without those good awful exposed neck joints.
He did give his opinion on this particular figure and we're in almost universal agreement that it looks great and it was the right call. But that doesn't mean he would have the same opinion if, for instance, you showed him a CW Black Widow with large, "Dark Helmet" style sculpted hair (an exaggeration, but you get my point). You're jumping to a conclusion about his view in the "sculpted vs. rooted" debate"* that isn't warranted. To put it in mathematical terms, it's not a trend if you only have one data point.
With respect to the exposed neck joints, I'd also like those to be eliminated wherever possible, especially on short haired sculpts like Hawkeye. But again, depending on the figure I can be flexible on the issue. If a character's signature pose has him/her soaring in flight, I don't want a figure that can only look straight ahead/down.
* - As DioramaMaker indicated, this really shouldn't be a debate as only you deem it a black & white issue. Instead of constantly bringing it up in the thread of every new HT female figure, can't you instead just bombard HT's facebook page with your opinions? If you want change, go to the source.