If it is 3.5 inches, that is for desktop use.Since everyone's needs regarding a screen are not the same (needed/not needed, large/small, etc), I'm not sure what you are arguing about. Your particular use/need case may differ from that of others, or for that matter what WiiM perceives to be the most popular among a broad range of buyers.
If you are 10 feet away, small screen is just of no use.
Do I make sense now?