The 'Captcha' module cannot be uninstalled via the Admin UI.
Remove dependancies - see https://git.drupalcode.org/search?search=captcha&nav_source=navbar&proje...
and https://git.drupalcode.org/project/sector_blog/-/blob/2.0.x/sector_blog....
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
+1 for this.
The anitbot settings already include comment_ forms when installed [1], so I think there is no further action needed other than dropping the config / dependency.