I suppose with all tanks having a secondary taunt-mechanic to fall back on and technically being able to glyph their taunt I don't really see the big deal.
One can always carry around a few glyphs (and should), and swap in a Taunt / Dark Command / Growl / Hand of Reckoning glyph for sensitive fights like Putricide and Saurfang if one does not like having to rely on a cooldown-based secondary taunt.
That's something I don't quite understand though, it seems a huge part of the community has an issue with swapping in a taunt-glyph for a taunt-based fight but does not consider swapping other glyphs for fights strange. Either the game is designed to allow me to optimize my glyphs per-fight - and considering how cheap they are it is currently - or it isn't, in which case I can only swap them say... once every 24 hours.
-- (The Death of Rats, Terry Pratchett, Soul Music)