Можно заменить дефолтные аватарки с этими квадратиками - некоторые прост не приличные.
en.wikipedia.org/wiki/Identicon. Идентиконки стандартные, как на гитхабе. Проверено временем. Если в них что-то мерещится - это к специалистам другого профиля 😃
В общем, веских причин чтобы убирать идентиконки - не вижу.
Жаль, что так…
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