I ran this to import all missing rows regardless if they were manually noted here or not:

taavi@mwmaint1002 ~ $ mwscript shell.php metawiki
Psy Shell v0.11.1 (PHP 7.2.34-18+0~20210223.60+debian10~1.gbpb21322+wmf5 — cli) by Justin Hileman
>>> $caUser = MediaWiki\Extension\CentralAuth\User\CentralAuthUser::getPrimaryInstanceByName( 'FuzzyBot' );
=> MediaWiki\Extension\CentralAuth\User\CentralAuthUser {#3280
     +mStateDirty: false,
     +mHomeWiki: null,
   }
>>> $caUser->importLocalNames();
=> true

Now there are 729 attached accounts and 7 not attached:

The attach timing on Special:CentralAuth suggests that most of those were created shortly after Reedy's manual actions.. not sure why? MW database at least on a random wiki agrees that the local accounts were created just now instead of just sitting there unattached for ages. Most of those wikis don't seem to use Translate either?

wikiadmin@10.64.16.7(knwikiquote)> select user_id, user_registration from user where user_name = 'FuzzyBot'\G
*************************** 1. row ***************************
          user_id: 1863
user_registration: 20220223203957
1 row in set (0.001 sec)

In T302399#7733534, @Majavah wrote:

The attach timing on Special:CentralAuth suggests that most of those were created shortly after Reedy's manual actions.. not sure why?

Reedy told me he created those.. that explains that mystery. Looks like someone attached those 7 accounts, (re)closing.