Bold Plagiarist fails to trigger when counters placed via bloodthirst

[xenohedron]

[[Bold Plagiarist]] - implemented as custom code Opponent controlled one, I cast Scab-Clan Mauler after dealing damage, it entered with two +1/+1 counters from bloodthirst, but Bold Plagiarist did not trigger. Likely fails for all as-etb replacement effects, but haven't tested. Works fine for normal cases like adapt.

122.6. Some spells and abilities refer to counters being put on an object. This refers to putting counters on that object while it's on the battlefield and also to an object that's given counters as it enters the battlefield. 122.6a. If an object enters the battlefield with counters on it, the effect causing the object to be given counters may specify which player puts those counters on it. If the effect doesn't specify a player, the object's controller puts those counters on it.

[github-actions[bot]]

Bold Plagiarist - (Gatherer) (Scryfall) (EDHREC)

{3}{B} Creature — Vampire Rogue 2/2 Flash Whenever an opponent puts one or more counters on a creature they control, they put the same number and kind of counters on Bold Plagiarist.