Better and faster connectivity opens you to new possibilities.in home internet yes , you need faster speed for gaming, watching, multiple streams at once. on mobile internet (lte or 5g) why we need gigabit speeds?
coming to apple / qualcomn, for them its a marketing trick to sell things
At this moment, you can have faster download speed for AAA games. You can play cloud games better with a lower compression rate. You can probably use a Remote Desktop better.
Not to mention you usually won’t get the full speed of mobile networks in congested areas. There are places where the qualcomm modems cannot load 1080p youtube videos.
LTE speed was plenty for a lot of people, but 5g lowered the download time of larger games by a couple folds. I would argue it is one of the reasons mobile games are as popular today because you can download big titles wherever you want.
The higher the headroom, the more things you can do, and the fewer the problems you will encounter.
Cars can go to 150miles not necessarily because you need to. But the cars with the higher top speeds also accelerates faster in normal driving.
And Apple was not known to build for the minimal needs. It pushes the boundaries.
Remember back in the day, they will include a 3g modem and unlock it with software later. They put wifi chips with 3x3 and newer generations of wifi chips that haven’t been standardized yet. A few years down the line, you will appreciate it because you device lasts longer