https://wowanalytica.com/statistics
Blood Elf 20.23%
Night Elf 9.50%
Orc 9.46%
Human 9.01%
Troll 6.65%
Tauren 5.47%
Undead 4.87%
Zandalari Troll 4.36%
Void Elf 3.62%
Vulpera 3.27%
Pandaren 2.94%
Draenei 2.64%
Mag'har Orc 2.33%
Nightborne 2.19%
Goblin 2.06%
Worgen 1.95%
Dwarf 1.78%
Highmountain Tauren 1.77%
Dark Iron Dwarf 1.60%
Gnome 1.51%
Lightforged Draenei 1.19%
Kul Tiran 0.97%
Mechagnome 0.63%
Allied races make up 16.47% of all counted characters, with some of them having significantly higher representation than some non-allied races. With gnomes at 1.51% and dwarves at 1.78%, you'd be hard-pressed to consider any of the current allied races an abject failure, even with mechagnomes at 0.63%.
Let's put it this way; of the 10 allied races so far, 3 are more popular than Pandaren and Draenei, 5 are more popular than Goblems, Worgens and Dwarves, and 7 are more popular than Gnomes.
If I were pressed to guess, I'd imagine that Blizzard considers allied races as a concept astoundingly successful, because they have been. After accounting for the elf factor, as well as ~10 years of character creation prior to them existing, the representation of most allied races vs. the effort to create them is astoundingly good in most cases. It's certainly better than many of the stand-alone races that have been released after the burning crusade.
What in either of the posts you have quoted indicates to you that the person replying to you is mad? Just curious. Discussing opinions (including when they are stupid) is literally the point of a discussion forum.