And which flagship nowdays have removable battery S8, U11, iP7, P10 ? Srsly when was the last time flagship had removable battery ? Like 2-3 yrs ago.. iphone has non removable since the first phone, and all of them are sealed.. So you will be looking for what ? G4, S5 ? Or similar flagships with removable battery.. G6 is fine phone that can work great for next 2-3 yrs.. And what about people who have low/mid range phones if they can be satisfied so can anyone.. Not like anyone uses phone for something else than surfing, social networks, youtube, mailing and stuff like that.. And beside u have 2 yrs warrinty so ? Who cares about non removable battery if you charge it correctly it can last long.
I had iphone 5 since 2012 until 2016 with original battery so.. And most of the people will not see the diffrence between sp821 and 835 so called g6 and s8, glass back is because of wireless charging.