I make a straight on turn, player has trips. River makes board straigh

[Dark_Mace]

So im sitting on pocket 2s. Board is 345 rainbow.
Tight player leads out, i call. River comes the Ace. Tight player raises 30 ish, i push, he calls.

River is the 2, completing a straight on the board. He throw his hands in the air in dissapointment. I throw over pocket 2s and say "I had the straight on the turn mate, sorry, you got a set of 4s or 5s?"

Withtout even realising the board makes the straight, he mucks his hand. Dealer starts to collect the pot. Then someone notices it should be a split and yells out.

Dealer says too late, and supervisor behind him sorry, too late, ship the pot to me.

Now, i know im fully entitled to the pot as the player mad the mistake. And i realise that i didnt do anything wrong by not giving him his money back.

However being big stack, obvisouylni got the comments from the other players that i should of "giving his money back".
I said "well i know none of you would of given me my money back if that happened, then im not gonna do it either".

Obv from that point on i was seen as the biggest [censored] on the table.

Would anyone have given the money back, or atleast half of the players loss? Keep in mind the other guy didnt even flip his cards over before mucking, he just mucked, and nodded his head when i asked if he had a set.