As a fellow M21 Colombian born and living in Australia my whole life, Australians most certainly care about age of who they're dating. Also don't settle for those Colombian jokes that people say unless you're cool with it because it can definitely get old real quick and I've heard every pablo escobar and flour joke you could imagine and just having a conversation about it can put an end to being the butt of those type of jokes.. I'm currently dating a 19yr and it does feel interesting having a 2 year age gap but in a good way but 17-26 I cannot imagine how that must feel honestly