But isn’t that every year at this point?
Even the majority of the modern updates one might call “big” are significantly smaller than the old “S” models of the iPhone.
The 3GS gave the iPhone its first processor bump, doubling the RAM, upping the camera from 2 megapixels to 3 megapixels, adding tap to focus, adding video recording capability, adding voice control, adding the first accessibility features, adding a compass, adding double the storage on both options, adding higher speed HSDPA 3G networking, and also received an extra two years of software support over the regular 3G.
Compared to pretty much any iPhone after the iPhone X, that’s a massive, massive upgrade.