I really found it surprising that so few of the PC based orthodox filemanagers adopted the DOpus style of user-defined buttons and multiple rows thereof at the

I really found it surprising that so few of the PC based orthodox filemanagers adopted the DOpus style of user-defined buttons and multiple rows thereof at the bottom, instead keeping with the few function key-based operations inherited from a time when there was simple no other option. (I'm aware of Gentoo and Worker doing that on Linux)