In Hero panel -> Achievements, I can select one of my HoM titles to wear, but I can't actually see it in context. I haven't seen anyone else wearing a title either. So... are these things actually working?
Some titles are not showing up correctly. If you have HOM titles, log out of GW2 then log in into GW1. Log back into GW2.
Actually I prefer games that throw titles at people from the earliest moment; at the end of the day they are just vanity fluff and giving some "freebies" to customize people's characters alongside the ones that show you have completed the hardest content is all the same to me. Some of them can be quite hard to get even at low levels, I remember getting my Krall Hunter in Aion at something like level 11 or 12 and feeling quite chuffed with myself, more so than the majority of titles recieved at level cap in WoW.