It is much easier to lose the remote since you only use it when using the TV (or other devices that have remotes). Where as you are much much more likely to be doing stuff on your phone actively. Also you can use various methods for locating your phone. Most remotes on the other hand don't come with the same features for finding them. I am only personally aware of Roku's remotes having the option to press a physical button on the main box, or via the Roku phone app (which can also be used as a remote).

I loved having the IR blaster on my Galaxy S6, and thought it was lame that it wasn't around when I upgraded to my S8+. Though I will say that the pre-installed third-party app got on the enshittification train at some point. As I started getting random ads on my lock screen and found that this app cause. So that would be one thing that kind of made losing the IR blaster suck less. Still it sucks to lose features that were able to exist on my smaller phones now that I started getting the + and Ultra size models. Most certainly could fit the aux port at minimum.