Not sure what your point is.
No point, just a question ...
Im in general curious about things that dont make sense to me.
And denying people something they want based on my not wanting it, while i can easily avoid it and act as if it never existed ... yeah, i have hard time understanding that.
I would like to play as a giant death robot (aka GDR) with 20 in all stats and heavy Armor proficiency. I really have this fantasy of steamrolling content, something missing in the boring and 5e.
I see no conection to the topic ...
Wouldnt it be better example, if you would NOT wish to play as this? O_o
If giant death robots are in game what would prevent you from not using them?
Nothing, that is my point.

You would be perfectly free to take one, if that is what you wish ... you would be perfectly free to take something else, if that is what you wish.
Everyone happy.
=> Some people are asking for additions (and that's okay), however it is legitimate to question the necessity of such request when core 5e content precisely mirroring that request (variant human) have yet to be implemented.
2 things:
1) If it is legitimate to question necessity of requests ... then it should be perfectly legitimate to question necessity of denying those requests, based on exactly same precedent.
2) It dont "precisely mirroring existing content" ...
Bcs Variant Human get reduced Ability Scores improvement, and (more importantly) its for single race only (Or at least i never heared anyone around here talking about Variant Tiefling, Half-Orc, Dwarf, Halfling, Gnome, Githyanki, etc.) ... it dont even exclude that missing content, bcs as it was said, Variant Humans would simply get two feats instead of one > Ballance restored.

The obvious answer to this is that the companions would probably be statted to have them, and so not taking one (assuming this were implemented as an actual option and not as a required part of character creation, which I feel like it would be) would put you at a disadvantage compared to the rest of the party.
You are adding more asumptions ...
I could aswell argue that they would not, to make your character even more special, compared to companions.
