It does look like it and checking online too. If you bought it at a nursery then they should know between an ornamental plant and environmental weed. Like anything if it grows easily from cuttings why always get rid of waste in bin and not dumping, as that is why so many plants can end up in bushland becoming weeds and choking out our native plants. @nikyt (I'm in no way meaning you dump plant waste either)
When I googled I noticed lots of nurseries selling something looking like this, but I didn't actually buy it. I just discovered it in my garden. I usually only buy natives or edibles. @leisel But I totally agree that no one should dump garden cuttings. I've done some bush regeneration work in the past and know the damage exotic plants can do in the wrong places.
One weed that is horrific is maderia vine, absolutely chokes everything. I recall years ago driving through an area where fruit trees choked to death by this weed. Then to be surrounded by it from neighbours yards, always looking out for any tubers that might drop from vine.