I have no idea how this can be framed as a slight against Huawei. Huawei decided to have aggressive battery management (which to many is a good thing) to the detriment of apps that need to continue to run in the background.

If this is causing a significant loss of rating for the app, they are well within their rights to blacklist installs from the play store for those devices. Those users can still install the app via the APK (which is admittedly a poorer experience).

Edit: Also I'm not sure where your'e getting the "West hates Huawei so much" vibe from. They've done a few things that have been unpopular from the POV of the Android community at large, such as no longer allowing unlocking of their devices this week, but I would say their bigger issue in the West is that they are simply not marketed much.