I actually did that tutorial on flask as well! And definitely helped me with understanding the beginning of my Django learning.
The pain with Flask for me was really figuring out project structure, there was not much of an outline, and seemed like people structure in many different ways.
I just started with Django this week, and I’m liking what I am seeing. At first it looks like a lot to take in, but the project structure is there for you, which I really like. Having an SQLite database already there for you, and even a WSGI file for easy deployment ( I deployed a simple page to Heroku just to test it out, and it took just minutes.)
I really want to jump in and get really into it, but just taking baby steps right now. ( Only like 3 days into it lol. )