Maybe its in some fine print or on official product pages. But for at least 95% of the users it was still a nasty surprise when they couldn't find charger (this is true across spectrum, ie Samsung is currently doing the same). Those folks are simply not following all the news and releases. The expectation and reality for 2 decades was that all necessary to charge is in the phone package.
So they effectively hiked the prices of their phones by quality charger. The thing is, outside of US most people don't change phones every 1/2 years. Heck, most of my 90 colleagues who are IT geeks have 5+year old android/apple phones, mostly androids. So folks generally don't have good fast chargers for modern phones, or USB-C output on chargers at all.
I've grown fed up with this and bought a Anker 65W one, I can plug 3 devices at the same time, both classic USB and USBC, its tiny, doesn't heat up even under 65W. Manufacturers, including Apple and most Androids failed in this (although I grok the marketing aspect and overall possibly net income gain for them).