Agreed, just because a particular job function isn't someone's responsibility doesn't mean that they can't learn from those who do. A junior developer isn't going to be making architecture decisions at most organizations and in a lot of cases, architects are in more of the strategy meetings that lesser experienced engineers bemoan having to attend anyway.
Organisations who don't give architecture work to juniors are terrible places to work for juniors. Zero career progression. You can only really learn good architecture through practicing and making a lot of bad design decisions.
I did architecture work when I was a junior. It's what made me a senior. I got asked if I wanted to do architecture work recently. I told them that's what we hire juniors for.
Architecture is piss easy. Any senior thinking juniors can't do it are full of themselves.
