Particularly given various unintended side effects -- I personally wouldn't want my connection to my deceased best friend to be subject to some decay feature on a social network.
And either way, it's not the core feature that will draw users to the site
If you want to differentiate as an alternative to toxic behemoth platforms, the framing of "Facebook but with chores" isn't it. The idea of spending time on the platform itself should be appealing -- I am not that interested in knowing how to connect with someone on the platform before knowing why I would want to be there in the first place.
See e.g. how Nextdoor doesn't lead with "you'll have to verify that you live in the neighborhood", instead it's "Connect to your neighborhood with Nextdoor"