You do realize that the OP specifically asked, right?This whole thread is pretty amusing to me, a Mares x-stream, an Atomic SMOTW, and an Apollo Bio fin owner and user. Can split fin users stir up the sand with their fin vortices? Yes of course they can. But, as a rec diver that rarely dives with the same diver, and who has had a long string of rec insta-buddies, most of which were using whatever paddle fins the dive op was renting/supplying, I have seen more silting and reef damage done by said divers than any competent diver using split fins.
This split fin bashing bit is getting pretty tiresome, and it is time we accept fins to divers are like golf clubs to golfers: They are tools. Period. It isn't the fin that creates the problem, it is the diver. The finest diver I have ever met or dived with is a CD with over 50 years of dive experience, and who was still doing deep tech dives in his 80's, and when I spent a week diving with his dive shop group at Bonaire in 2010, he was using a jacket and SP Twin Jet Max fins.
But since you brought it up, some tools are better than others.