This only affects those who registered their account on piefed. It allows them to login into their account and interact with the website. If your account is on lemmy (which is the case for you), it does not affect you in any way.
Basically, lemmy uses 2 different APIs:
One (activitypub) is used for communication between instances. It is the same for both Lemmy and piefed, so no work is needed on this front.
The second one is used for interacting between lemmy core and applications (like boost, but also lemmy webui). Piefed for whatever reasons decided to make it incompatible with Lemmy, so all application have to do some work in order to add piefed support.
But saying that xbps-src is like the AUR is very misleading because it lacks the "U" part.
It is misleading because AUR is a repository, but xbps-src is not. It is a tool like makepkg in arch. One could argue that xbps-src is a more advanced tool as it also acts as a package manager itself.
A repository that is most commonly used with xbps-src is void-packages which is maintained by void teamm one could build a repo for xbps-src like aur, but to my knowledge it has not been done and is unlikely to succeed any time soon due to a smaller user based compared to arch.
This only affects those who registered their account on piefed. It allows them to login into their account and interact with the website. If your account is on lemmy (which is the case for you), it does not affect you in any way.
Basically, lemmy uses 2 different APIs:
One (activitypub) is used for communication between instances. It is the same for both Lemmy and piefed, so no work is needed on this front.
The second one is used for interacting between lemmy core and applications (like boost, but also lemmy webui). Piefed for whatever reasons decided to make it incompatible with Lemmy, so all application have to do some work in order to add piefed support.