XZise added a comment.
Okay I checked and compat does use strings while core uses since https://phabricator.wikimedia.org/rPWBC55d6232edd0edb379076e020383a150708178... Page instances. And the script was committed in https://phabricator.wikimedia.org/rPWBC00dee9ab8e37111c66943d00332845b930690... with the code regarding the templates as it is now.
TASK DETAIL https://phabricator.wikimedia.org/T97248
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To: XZise Cc: XZise, Aklapper, Rubin16, jayvdb, pywikipedia-bugs