The thing is: Asus phone where never small.

I still use my Nokia N9 from 2012 daily as second phone. It has 117 x 61 x 12 mm. The Asus Zenfone 8 has 148 x 69 x 9 mm. Thats 25% higher (And also 25% heavier)

If you like big screens thats fine. There are plenty of offers for you and the market caters to you. I like small screens and device, because I tend to use complex Apps which require me clicking all over the screen. This is a hassle even with the Pixel 5 which I now got to use apps required (Banking, and so on) I have no options to buy such a device for year. Yes there are very few sometimes popping up like the Unihertz Jelly Star Star, but they all lacked features I consider essential.

(In this case update support, no OLED and Android apps can not deal with the low resolution display) Other features I miss but by now do not even dare to dream of: Real Multitasking, ability to fully customize the lock screen and menus (e.g. to red fonts for stargazing), weeks of standby time in flight mode and a single week in GSM mode, ability to work fine in 2G too because no copious amounts of data are sent in the background without asking you.

So yes there are plenty of options for the standard user, all with minimal differences. But for users like there are many in this thread, there are none.