If I use WhapsApp or the weather app on my mobile or a VOIP phone I'm also using the internet but would never all it internet because that's a app and I (usually) don't care how data flows in the background.
Yeah. Internet is becoming more and more an implementation detail, an invisible but omnipresent infrastructure behind most telecommunication services instead of something you use explicitly - let alone "visit" like in the dialup days. Walled-garden worries notwithstanding, I don't think this trend is necessarily a bad thing.