He's got a point, to be fair. There's a bit of rivalry and then there is actively targeting a player who is clearly having a really crap time of it. Everybody had a bit of a laugh at his expense but the amount of crap thrown his way after the final was out of order. He cut a pretty sad figure on the pitch and it's not a case of a player not giving his all, you could tell he was devastated by his errors.
He's not helping himself though. If people know he's taking it to heart they'll continue to do it, reacting to it on social media is not the way to go about it. He needs to get off it entirely and get out of Liverpool, don't see any future for him with you.