Your welcome.
WebDAV is a standard Windows protocol for dealing with files over web (basically). Unfortunately its poorly maintained, and a litte bit less performant. It also has limitations when it comes to big files, and windows isn’t dealing with that since years now.
This is why 3rd Party virtual file systems are supported. Nevertheless WebDAV can be the choise for people who do not have big files and dont care about the littel performance gap (I was one o these people in my early cryptomator days 
)
Meanwhile I switched from webDAV to dokany and (as soon as it was available) to WinFSP. Both dokany and WinFSP worked fine for me, but for testing reasons I actually stay with WinFSP and I am very happy with it since month now.
And yes: WinFSP is shown in Cryptomator as “FUSE”