To be a bit cynical
The timing of this (the terrorism arrests, not so much the fuck up) is a little, well, suspicious given all the money / expenses / thieving politician bastard things in the news at the moment.
Pretty much everyone I have spoken to agrees that this looks far more like Whacquie Jacquie trying to divert attention from her [and her party's] own troubles by arresting a group of dusky skinned blokes, presumably all with beards, in order to keep the rest of us safe.
However having armed police waving guns in crowded areas whilst trying to subdue extremely dangerous terrorist suspects* who one must assume have access to explosives (or they cannot be _that_ dangerous or terroristy) appears to be defeating the point of the whole "keeping the country safe" bit.
*if they are not at least labelled as extremely dangerous terrorist suspects then there is no point in this level of fuss, even if it turns out they are not then the government will still keep telling us that they are. Still, the government and filth need to act as if they believe that these people are dangerous. There is also a chance that they are actually dangerous people in which case arresting them in crowded universities etc. appears a bit cavalier to say the least.