You are simply speaking from a lack of experience and a strong unfounded sense of skepticism.
Many of us here have decades of experience in high end audio and have constantly listened to the digital technology as it has developed over the the last thirty plus years. I have listened to streamers on PCs… optimizing them, MacBooks… running on batteries, inexpensive streamers, $3K, $5K, $10K, $13K, and $22K streamers. The thing that absolutely stands out is the sound quality differences… like night and day.
For most of us here our primary concern is sound quality and the big deal is the sound quality of different streamers. While their control apps are a question of convenience. Most get the job done and once learned they are not the primary function.
Sorry you cannot understand the logic.