Go to your phone homescreen and look at the app dock (the bottom row that contains some apps and stays the same when you switch pages).
Which are yours? Any FOSS apps?
In my case, they are FDroid, Signal, Threema, Firefox and the defaul Samsung camera app. So, 80% FOSS…
If I were having high-stakes conversations, I might agree, but any slight delays in updates is unlikely to affect me. I’m not a high-stakes target of any sort.