It forced me to reckon with the fact that tapping on these apps is often a system 1 instinct. The forced delay to reinstall the app is an escape hatch into system 2 thinking, a mode in which I normally realize I don't even want to use the app, I'm just bored. And then I'd pick up a book or use my newspaper-reader-app (i.e. a more intent/system 2-driven choice).
Off-loading apps or even just removing them from the home screen is really helpful. It gives your system 2 brain an opportunity to mutate your environment to make system 1 processes lead to more fruitful outcomes.
For the same reason, I clear my browser history every month or so and avoid bookmarking certain sites like hn or reddit.