My point was not there is no need or point to high end gear, there is a point and need. I actually own MF and large format gear with leaf shutters. I 100% agree that there are shots taken with MF digital that can't be shot with 135 format gear, that is a fact despite some posters stated belief that gear is just a matter of convenience and any shot could be shot with any gear given time and thought!
My point was unless you actually understand how it works and the limitations it has then jumping on the term "leaf shutter" as a seemingly all encompassing panacea of creative sync work is inaccurate. Thinking that a leaf shutter in an EOS lens would actually give you much additional creativity is fraught with errors, to realise any of those additional capabilities you would need more than just a lens with a leaf shutter. As for an EOS lens with a leaf shutter that gave you 1/500 instead of 1/250 sync, well there is a very good reason that hasn't been made (though you could easily use a current lens with a convertor), the cost would not be worth the effort.