By now I'm sure you won't change your mind but here's a few thoughts:
-Did you account for crit variance between your two DPS numbers?
-Did you also test this outside housing areas? Housing areas process battle information faster than normal areas and instances which means faster activation of all abilities, including macros. (probably because there's a lot less fighting going on in those zones)
-By not using a proper rotation the compounded DPS loss is less visible, because using your strongest abilities and buffs will multiply the loss. Just because you acknowledge you'll get criticized for this doesn't make the point less valid.
Considering those points will most likely turn the 2% difference closer to 5% or more. You also seem to have fairly low latency, someone less fortunate is going to suffer more from the lack of macro queueing.
Here's the big picture about helping new players, though. Like you say, you can only do this on MNK because their combos run on buffs instead of the normal combo system. Why would you learn this system for one class when you can not use it on any other? Why accept a dps loss that can be avoided? Why accept the lack of buff/oGCD control? This doesn't really help new players, it gives them a crutch system that hinders their growth as a player. In my opinion, it's much better to teach new players good keybinding practices that will allow them to:
-use up to 48 hotbar slots effectively in all situations
-use the same system on all classes, cutting down learning time and improving muscle memory
-avoid the pitfalls of macros (no ability queueing, lack of control, dps losses)
If you're really trying to help new players, I'm sure you can see which system is universally more versatile and effective.
For anyone who actually wants to avoid macros, here's a decent keybinding guide to get you started: https://taugrim.com/2011/04/07/guide...d-keybindings/