Oh but I have seen totally tech uneducated people saying that they are tired of so many apps in their phones that slow things down. People do notice, and as soon as you start asking around groups who use mid- to lower tier level of Android devices, they do develop a diffuse intuition of what is and what isn't a "heavy" app. It is unavoidable, the cruft and bloat can be observed very visually in some apps that don't care about performance.