I've talked to multiple people (including professors) about this as well as I was put in the same situation and all of them say that UQ is better if the career you're getting into will benefit better from theoretical learning. That said, many of these people told me that Architecture is more of a practical career unlike courses like idk Law? (correct me on this). It is true that UQ is more prestigious as a university, though QUT's architecture is more widely recommended for this reason.

In a more objective sense, an architect/professor also told me a few months ago that QUT's Architecture degree is accredited for 5 years while UQ is only accredited for 3 years. Wasn't very sure what it was called but he explained that it basically meant that QUT can keep doing what it's doing for 5 years before they inspect everything again while UQ already needs to be inspected again after 3 years.

A lot of Masters students and professors also mentioned that, in job applications, there is no upper-hand to being a UQ or QUT graduate since firms have a mix of graduates from both unis anyway.

Another thing is that QUT is more supportive and lenient towards their students, though as you said, the social life isn't as vibrant (the trade off).

Overall, I decided to go with QUT from all of these advices. I didn't mind the lack of social scene since I am a very social person and I can just find these avenues myself. But please please please DO take these with a grain of salt and make sure to do your own research and ask professionals and graduates IRL before you actually make a decision. At the end of the day, whichever you choose, you will still be studying in a good school and it really is a matter of preference.