rbb, if you don't want to take my word for it, no worries, but go check the legislation for yourself. To be blunt, most of those people you speak to at that call center don't know anything about anything.
Go to
http://www.legislation.qld.gov.au and check out the Nature Conservation Regulation 2006 (Wildlife Management). It says:
Reptiles
The following reptiles are restricted animals—
(a) a threatened, rare or near threatened reptile other than
the following—
(i) a reptile of the family Cheloniidae;
(ii) a reptile of the family Dermochelydiae;
(iii) an estuarine crocodile (Crocodylus porosus);
(iv) a freshwater crocodile (Crocodylus johnstoni);
(b) a reptile of the family Hydrophiidae;
(c) a reptile of the family Laticaudidae;
(d) the following reptiles of the family Elapidae—
Common name Scientific name
black snakes Pseudechis spp.
broad-headed snakes Hoplocephalus spp.
brown snakes Pseudonaja spp.
Collett’s snake Pseudechis colletti
copperheads Austrelaps spp.
death adders Acanthopis spp.
eastern small-eyed snake Rhinoplocephalus
nigriscens
rough scaled snake Tropidechis carinatus
taipans Oxyuranus spp.
tiger snakes Notechis spp.
And as for whether there should be more people keeping small elapids? Not really. As you said yourself, most of them are a pain in the backside and there's few around compared to the larger elapids.