Lovely work from Elia Locardi! I certainly think that there is a place for blurred water in waves and waterfalls. However, the amount of blurring is up to the individual photographer's taste. IMO some photographers overdo the blurring but, that is their prerogative. I am not an editor paying for their shots so they can shoot any way they wish,
I would suggest that a person shoot several shots at varying shutter speeds to end up with what he or she likes.
One problem that often occurs in long exposures is that the foliage sometimes moves in the breeze and is not tack sharp. IMO, a blurred water shot needs a tack sharp surrounding to be effective.