I had an initial document and development environment running within twenty minutes. That's impossible with LaTeX. In fact, for years, I had a tailor-made Docker image just for keeping LaTeX running, compiling and sane (I use more advanced features to make LaTeX bearable in $CURRENT_YEAR). That setup broke the other day.
I never investigated why, because an ecosystem where one has to go to such lengths in the first place, only to have it break, is not one I want to be a part of any longer. For typst, I can just grab the binary of the version I used and it will just work forever (or just compile it, which I have confidence will also be pretty stable for many years to come thanks to Rust).