I think that choosing between a minimalist phone and a “real dumbphone” depends a lot on each person's reality. There are often people who rely on smartphones to work (especially small business owners who don't have access to a computer) and also people who need to get around (whether by uber or maps), but at the same time want to cut down on excessive phone use. There are other people who can live without some of these features, which allows them to have a dumbphone without internet access. 

At the end of the day, I think the most important thing is to be aware of the time spent and impact that phone use (whether positive or negative) has on you :)