From the games and the books, I've gotten the impression that the Templar Order, actually the entire Chantry is pretty humanocentric. Until I see a dwarven templar in official material, I'll continue to assume they would not exist. Apart from racial concerns, the issue of a dwarf signing up is further complicated by one of the requirements being fervent faith in the Chant of Light, and though you could probably whip up some crazy story about a dwarven convert, it sounds very much like a one-in-a-million exception and rather "special snowflake", if you catch my drift.
That being said, the perception of character realism as well as setting specifics is very much subject to personal interpretation, so I suggest having a talk with your entire group about this and then decide which approach you as GM will be going to take.
I call shenanigans on that supposed quote. The citation cannot be found on google and the given source itself returns a 404 error
and is neither saved in google's cache nor the
Internet Archive.
I recall it was once explained that the specializations available to the player character in the computer games are not to be taken literal and they merely concern a given skillset, not necessarily conveying automatic membership or even only deeper knowledge into whatever organization it is affiliated with. For example, in DA:O the player character can learn the templar spec from Alistair, yet that doesn't render the character a member of the Order.
Perhaps David Gaider may have meant this and his statement was taken out of context?
Of course, this is also how you could "twist" it for a dwarf (or an elf, or an Avvar, ...), essentially allowing him to use the
mechanics of the specialization without any of the actual background.
For example, you could probably invent something like a dwarven "Blight Hunter" using the templar spec in all but its name if you'd want to go down that route; personally I would regard this as somewhat more compatible to the established background than any alternatives, should you care for this kind of consistency. Writing down your own fluff for this specialization (or allowing the dwarf player to suggest a concept!) could even be fun, in a creative development way of things.
I myself would prefer to keep the various specializations unique to their distinctive cultural spheres, but then again I am more conservative than most when it comes to these things, hence my suggestion to check how everyone in your actual group is feeling about it.
