That is absolutely awful!! He does not replace God with himself. Think about it. Jesus gives glory to God in everything. He's not God and he's not the biggest blasphemer ever.
No one is saying that Jesus is a mere man. God was his Father, that doesnt make him a mere man. He had to be the Son of God and the son of man. Both. Not 100% God and 100% man. That's just stupid talk. Scripture tells us that he was like us until he went to heaven. The perfect sacrifice had to be someone like us. If he was God, the atonement goes right out the window.
BTW, here is the Passover scenario from your NWT:
“Go and get the Passover ready for us to eat.”
+ 9 They said to him: “Where do you want us to get it ready?”
10 He said to them: “Look! When you enter into the city, a man carrying an earthenware water jar will meet you. Follow him into the house that he enters.
+ 11 And say to the landlord of the house, ‘The Teacher says to you: “Where is the guest room where I may eat the Passover with my disciples?”’
12 And that man will show you a large, furnished upper room. Get it ready there.”
13 So they left and found it just as he had told them, and they prepared for the Passover.
14 So when the hour came, he reclined at the table along with the apostles.
+ 15 And he said to them: “I have greatly desired to eat this Passover with you before I suffer;
16 for I tell you, I will not eat it again until it is fulfilled in the Kingdom of God.”
17 And accepting a cup, he gave thanks and said: “Take this and pass it from one to the other among yourselves,
18 for I tell you, from now on, I will not drink again from the product of the vine until the Kingdom of God comes.”
19 Also, he took a loaf,
+ gave thanks, broke it, and gave it to them, saying: “This means my body,
+ which is to be given in your behalf.
+ Keep doing this in remembrance of me.”
+ 20 Also, he did the same with the cup after they had the evening meal, saying: “This cup means the new covenant
+ by virtue of my blood,
+ which is to be poured out in your behalf.
+
So Jesus says to do Passover in remembrance of him.
Exodus 23 states:
14 “Three times a year you are to celebrate a festival to me.
+ 15 You will observe the Festival of Unleavened Bread.
+ You will eat unleavened bread for seven days, just as I have commanded you, at the appointed time in the month of A′bib,
*+ for at that time you came out of Egypt
God wants the celebration to him. Jesus wants the celebration to him from the Last Supper forward. You do the math.