UFS Question - 3.1 vs 4 - Real World Experience

[mccmw]

One notable complaint I've seen on the Pixel 9 series (I have a Pro) is Google's choice to use UFS 3.1 for storage memory instead of 4.0. UFS 4.0 has been out for some time now and seems to be included in most/all of the other Android "flagship" phones. Benchmarks show it both far superior in performance and also much more efficient. Was "cost" the only reason for Google to stay with 3.1 (their cost...not our cost...they make mroe profit) or are there benefits to staying with 3.1? Also, while benchmarks so very large difference in transfer speeds, is that noticable at all in real world usage. I can see it helpful if someone is playing a very storage-intensive game (Tensor chips are already deemed inferior to Snapdragon for gaming), or transfers a lot of files back and forth from other devices. What about real-world usage? Would we be experiencing better performance and battery life if Google went with UFS 4.0?