boarim i'm aware of this.
I'm ok with features bring developed, however i see no marks about "alpha" or "early access" status in the gos appstore:
"Accrescent is a private and secure Android app store built with modern features in mind. It aims to provide a developer-friendly platform and pleasant user experience while enforcing modern security and privacy practices and offering robust validity guarantees for installed apps."
Also, as i remember, at a some point there was an app including some google and huawei blobs in accrescent store, without clear indication about that.
https://github.com/accrescent/accrescent/issues/637
Is it still a thing?
As for me, if i want to install proprietary software with some vendor blobs, i come to google play store, apple app store, ms store etc, depending on platform. Any of those are not advertised as "private ... app store" though, i believe.