Still doesn't benefit as much as Ryzen does, but if you have the $$$, go for it. It only costs a little more, until you get to 3600+, then prices get even more stupid.
As for youtube videos, unless you have the same setup(part for part) and environment(the condition of the room, ambient temps) as the Poster, don't expect the same results.
I already have 2666, so it would be a huge waste to get 3200mhz for a likely unnoticeable performance increase.