No, it's not.
Don't forget to keep your camera bag under the tripod. It makes it harder for it to be stolen by the unscrupulous.
Then you toss the 10 kilo tripod on them to keep them there till the police arrive.
I would emphatically recommend keeping out of Melbourne CBD if you're a photographer at this time (Christmas-New Year holidays): it is profoundly chaotic and unbearable everywhere — not the Melbourne I know. No clear space, pushing, shoving, cheek-by-jowel crowds. Three hours was a long as I wished to spend in that seething maelstrom and then skidaddle out of there as fast as 'Twiggy's' wheels would turn.
I bravely took in a tripod and some large-ish camera to New Year's eve a few years ago - as I recall, as Gary suggests, the experience was not... awesome.
A few years ago I spent Christmas Day in Melbourne CBD, it was like a ghost town, I got some great photos of a bare Swanson St, an old guy feeding pigeons in Bourke St Mall will not another soul in sight... Best Christmas Day I had had in a long time. A far cry from the insanity of the days on either side of it!
I do heaps of shooting in Melbourne. The law states that it's all good as long as you and your equipment is on public space and not an obstruction to traffic. Also, if your after shots inside Flinders St Station, go and speak to the station master and they will give you a 60 day photography pass. Apart from that, just use your common sense.