TLDW: To have g, r, and s blender hot keys in godot 4.2 click Editor --> Editor settings --> search for “begin” --> use the Plus symbol to set “Begin Rotate Transform” hot key to r, then “Begin Scale Transform” to s, and “Begin Translate Transform” to g. My favorite thing not mentioned in the video is that constraining also works. So you can press r then x and rotate in the x axis or g shift y and translate on the x and z axis.
Its a small feature, but I do appreciate when applications have similar controls. Going from Godot, to Blender to OpenSCAD to PrusaSlicer in a day can give you whiplash on what buttons do what.