Do you have a reference / link that confirms there are active Telstra 5G towers operating in anything close to the much maligned "mm wavelength" bands? I found one that reported the trials in those bands, but the Telstra sight at https://www.telstra.com.au/consumer-advice/eme/5g-and-eme has the words: "The initial radio frequencies that will be used for 5G in Australia are 3.5GHz and 3.6GHz which are in the existing mobile band. In future years radio frequencies in the mmWave band at 26-28GHz are expected to be used for 5G in Australia."
Lets not let the facts get in the way of a good campaign here.
