At 00:56 you mention you prefer right click because the gizmo doesn't get in your way when you select things. I always use G,R,S hotkeys, I never touch the gizmo so this doesn't really convince me. Are there are other situations where right click is better?
I did read the left-click-or-right-click article but I feel like I haven't ran into the issues mentioned there (yet). I'm not arguing against left-click, if right-click is better then I'll switch to it, I just don't see why. :)
One thing I remember from the older versions of Blender is left-click being responsible for the 3D cursor and that never made sense to me. How often do people need to move the 3D cursor?
As Wayne said, it's all on you.
Left click select is the standard across pretty much all software, which is why Blender switched to LCS.
Some long time users of Blender have remained RCS, mostly I guess because of muscle memory.
Neither RCS or LCS is better per se. But in the context of the user or task, one may be better than the other.
I personally use LCS, because RMB gives me the context menu and SHIFT + RMB relocates the 3d cursor, I don't need to think about the extra W key.
It doesn't make sense to me to have positioning of the 3d cursors as such a prominent feature on LMB, considering how little I use it.
Also I disable the object gizmo's as like you I use the hotkeys.
I would suggest if you discovered Blender post v2.8, and are currently LCS, stick with LCS.
Switching now may cause some confusion, disorientation and dizziness.
