In the US maybe. In Europe, not so much. With Apple having a market share of "only" about one third and WhatsApp being the de facto default messaging app, this discussion never happened here.
Therefore your argument doesn't apply to Europe at all. Android is more than the "hacky" part. Albeit I'd really love to keep that.
99.9% of people who use Android have never, and never will, install apps outside the Play Store, and aren't even aware that they can do so.
I'd guesstimate that close to 50% of Android users know how to install an apk.
Outside of the Western market, installing Android apps not from Google Play is a completely normal and regular thing. In countries like India, Brazil, Indonesia, Nigeria, and the Philippines (which represent a massive portion of global Android users) it is a standard part of using a phone.
> Judgment of the General Court of 14 September 2022 — Google and Alphabet v Commission (Google Android) > > The General Court largely confirms the Commission's decision that Google imposed unlawful restrictions on manufacturers of Android mobile devices and mobile network operators in order to consolidate the dominant position of its search engine
https://curia.europa.eu/jcms/upload/docs/application/pdf/202...
Press release:
https://curia.europa.eu/jcms/upload/docs/application/pdf/202...