I don't advocate treating him, or anyone so abrasive, sensitively, but I do advocate not persecuting him.
That is the natural to & fro of social-interaction, debate, growing-up in male competitive environment ?
Do not see persecution (at least not by myself).
I see a young person sounding out how to assert themselves in adult-conversation.
I will not baby him. You can if you wish.
I hope Yereslov will watch the famous and immortal games of Mikhail Tal. This way he will not belittle Tal's chess genius abilities.