Similar to the Bose QC20. I have both, and am starting to prefer the APP, but batteries don't last as long. I keep using the QC20 wired some each week too.
In both cases those 'transparency modes' do filter out a bit of useless noise, and I do feel a bit more 'aware' of things/people outside me with that mode on. I've often thought that's also at least partially because I intentionally switch to that mode for a reason (then switch back to full noise cancelling when done).
AirPods which have transparency mode can work as low end hearing aids. Not a suitable replacement for people who require hearing aids, but for people who have light to moderate hearing loss they help.
I admit I just got a pair but haven't really tried them out yet. I imagine it would take a lot of habit breaking for me to get comfortable with them walking around. If you're actually listening to music etc.--i.e. actually have a reason to have them in your ear--I think I'd still find it isolating.
