Has anyone here experienced a failing Prius eCVT/transaxle on Gen 3?

My 2010, 193 500 Prius has developed a whirring / high-pitched drivetrain noise at certain speeds and under load.

A mechanic confirmed the transaxle fluid was slightly low due to a small inner axle seal leak, and the fluid looked very dark. At this point, it’s looking more and more like internal transaxle wear/noise.
The noise disappears immediately when I let off the gas or shift into Neutral while coasting.

I’ve already ruled out:
wheel bearings
CV axles
brake dust shield
inverter-related noises

The car still drives perfectly fine otherwise:
no warning lights
no vibration
no drivability issues

I’m mainly looking for people who have had similar Prius eCVT/transaxle noise symptoms and:
how long you kept driving it

whether the noise worsened slowly or quickly

and if anyone successfully drove for years/thousand of miles with it noisy but without major issues .

Thanks!