1. It depends on what you mean by worship. The truth of Jesus' words did not change after he returned to heaven.
“You heard me say, ‘I am going away and I am coming back to you.’ If you loved me, you would be glad that I am going to the Father, for the Father is greater than I. (John 14:28, 1984 NIV)
2. God granted mankind this authority:
Then God said, “Let us make man in our image, in our likeness, and let them rule over the fish of the sea and the birds of the air, over the livestock, over all the earth, and over all the creatures that move along the ground.” (Genesis 1:26, 1984 NIV)
which he won't take away:
for God’s gifts and his call are irrevocable. (Romans 11:29, 1984 NIV)
However, when Adam sinned, he broke is connection to his Source of life and came under the domination of the Father of all sin and death.
You belong to your father, the devil, and you want to carry out your father’s desire. He was a murderer from the beginning, not holding to the truth, for there is no truth in him. When he lies, he speaks his native language, for he is a liar and the father of lies. (John 8:44, 1984 NIV)
Which allowed all who had a sinful nature to be dominated by Satan. i.e., the ruler of the earth with respect to the authority that God had given mankind. However, nothing changed that fact that God created everything and was and is higher than all authority (Philippians 2:9-10, Colossians 1:15-17).
The earth is the LORD’S, and everything in it, the world, and all who live in it; (Psalms 24:1, 1984 NIV)
Jesus knew that his mission on earth was to recover mankind's rulership of the earth, and to do so he was going to suffer and die. Satan was tempting Jesus to take a short cut (Matthew 4:9-10). But of course the offer was a deception, because the act of bowing down and worship Satan would have brought Jesus under the same domination that mankind was under.
The way Jesus redeemed mankind's authority was through his right to be our
kinsman-redeemer. Jesus' death paid the penalty for sin for all mankind (although only those who choose to yield to his authority gain the benefit of that). God gives such people a rebirth in His kingdom and they are no longer a part of Satan's kingdom.
For he has rescued us from the dominion of darkness and brought us into the kingdom of the Son he loves, (Colossians 1:13, 1984 NIV)