xCloud/Stadia aren't dealbreakers for me on iOS specifically, I do stream in-home, which Apple does allow (Steam Link and Moonlight) so I'm good with that.
But I find Android to be a much better phone OS for me personally.
iMessage and Airdrop are nice features to have since my partner is iOS only, and I do like iOS for the handful of exclusive games (most of which are ports like Fez, Witness, Bastion, etc), but most games I play on mobile ARE on Android too (Kingdom Rush series, Holedown, Desert Golfing, Tap Titans 2 etc) and even then I rarely game on my phone much these days.
I got sick of FaceID after a few months on an XS Max so I doubt I'll get another iPhone until they bring back the fingerprint reader (in-screen/power button/rear, anything will do). Also, most of my electronics use USB-C these days, and it sucks needing to get lightning cables which seem to break 5x faster than other cables.
I do have an iPad Pro which I really like. Perfect for in-home streaming, I can Airdrop my pictures to my partner from my iPad when we get to the house, and I still get to play those occasional iOS exclusive games.