Obama dropped many bombs yet I can never remember a discussion about it. What is it that troubles you so about this one?
https://www.theguardian.com/commentisfree/2017/jan/09/america-dropped-26171-bombs-2016-obama-legacy
As an aside, and I suppose you are already aware, MOAB in military terms is actually "massive ordinance air blast".
The mention of Obama is, while yet another example of the tu quoque fallacy on here, at least valid in reminding us that Trump argued two essentially contradictory positions in his campaign, one of more interventionism, and less interventionism. Of course we should also remember, that we are also bombing on a regular basis, and the vicar's daughter was happily selling arms to the Saudis to carry out the attacks on Yemen, while maundering about chocolate eggs.
And yes, I was aware of the 'official' name, but I am cynical enough to wonder (a) if massive was used so the unofficial title would work, (b) if it wasn't, did some person get a bit excited and come on their pants when they realised, and (c) how very macho posturing it was to make of the unofficial
name and state it.
Haven't looked into the Russian Father of All Bombs 'official' title, is it 'Feckinyuge Ordnance Air Blast'