Hi! Full disclosure: for those who don’t know me, I’m the Accrescent developer, so take that as you will.
Given that Accrescent currently 1) lacks many features users expect in an app store (descriptions, links, changelogs, etc.) and 2) limits developer registration to a whitelist, I think recommending it generally would be premature. I think most people who use it now (including developers who publish to it) are aware of its shortcomings and have chosen to use it in spite of them, whereas those who haven’t heard of Accrescent before and only know of it as “another app store” have higher expectations and so would be disappointed and/or surprised at the lack of features and options in comparison to other app stores.
I also understand PG doesn’t tend to recommend alpha software. Admittedly “alpha” is a somewhat arbitrary distinction, but I think it’s fair to say Accrescent doesn’t yet have the standard feature set expected of an app store.