Well Aussie V8 is pretty much the only top level / pro series where rule book says H-pattern. I hope they'll never change that But it's a spec series and LFS GTRs are not touring cars, so not exactly same thing.
I doubt driver's personal preference matters much because sequential is faster and easier to use.
In "amateur" series like VLN or FIA GT, it's a budget question so H pattern is obvious choice because it's much cheaper, but that's not the case in FIA GT / ALMS / Le Mans etc. I claim that today there are no H-pattern powered cars in these series, only expections might be the few privately build cars that once in a while shows up in a race or two.
I once asked about this stuff from one driver who has been driving several cars (F430, C6R and some others) in French GT series and random races in FIA GT and he said last time he used clutch for shifting was in 2002 in Bi-Turbo Porsche.
Probably only matter of time when paddles become "standard" in GT cars. Which is a pity, it's always less job to do for the driver
I agree, sims are so much more easier to drive that I see no use for TC in sims (except maybe for F1).