I suspect that if you live outside the major cities in Aus, there isn’t so much in the way of arts or theatre, but that’s because the population tends to be concentrated in the cities. However, saying there “isn’t culture” is just mad and shows that you either haven’t been here or it just wasn’t important to you when you were here. Which is fine! I go to the theatre once in a while in London, once in a while in Sydney. I go to the art gallery maybe 2-3 times a year in Sydney, and in the time I’ve been in the U.K., I’ve been to about the same.
Maybe if theatre and the arts are your major passion, then London is a better spot, but for most people, who might go to cultural events a few times a year, any major city probably provides what they need.
Even when I lived in tiny Adelaide there were cultural events all the time, you could barely get through the month without something else on!
And saying Sydney/Australia has a monoculture - what are you talking about? In my son’s friend group alone he has families from China, India, Malaysia, Korea, Japan, the U.K.,France and Italy. Sydney has had waves of immigration from (off the top of my head) Italy, Greece, Lebanon, Iran, Vietnam, Cambodia, Ireland, plus now China, as well as huge numbers from the U.K. over the years. The second biggest Greek population in the world (after Greece!) is Melbourne. Are you saying that none of those people have any effect on the culture of the country?
Again, in country areas, the population is probably more solely white, but that’s true in the U.K. as well. In my son’s class in surrey he only had two children out of 20 who weren’t white, whereas his class in Sydney was around 40% white (and out of that 40% they came from a variety of white backgrounds, such as Italian, Greek, Irish and British).
Australia isn’t for everyone, and that’s fine - but at least if you’re going to dismiss it, learn the reality, don’t just spout random made up thoughts like “its a monoculture” or “schools are worse”.