There are some slight differences on how some members and authorities view this topic. But for me Joseph Fielding Smith the tenth president of the church represents my take on the subject. He said: Thus each choice had consequences. And yes choosing to eat the fruit came with spiritual separation from God and with mortality and death. Call it sin if you wish, but I for one, am thankful that Adam and Eve made the choice they did so that I could gain a body and further progress.
Just by way of note: when he says the Lord has made it clear this is likely in reference to modern revelation on the topic.
your "prophet is simply wrong. God does not say that. he does not say, “eat this if you want to get kicked out of Edenn”. he says, “DO NOT EAT IT.”
15 The Lord God then took the man and settled him in the garden of Eden, to cultivate and care for it. 16 The Lord God gave the man this order: You are free to eat from any of the trees of the garden 17 except the tree of knowledge of good and evil. From that tree you shall not eat; when you eat from it you shall die.
Further, to show it was not so simple as your alleged prophet would indicate, the punishment was more than just getting kicked out.
14 Then the Lord God said to the snake:
Because you have done this,
cursed are you
among all the animals, tame or wild;
On your belly you shall crawl,
and dust you shall eat
all the days of your life.
15 I will put enmity between you and the woman,
and between your offspring and hers;
They will strike at your head,
while you strike at their heel.
16 To the woman he said:
I will intensify your toil in childbearing;
in pain you shall bring forth children.
Yet your urge shall be for your husband,
and he shall rule over you.
17 To the man he said: Because you listened to your wife and ate from the tree about which I commanded you, You shall not eat from it,
Cursed is the ground because of you!
In toil you shall eat its yield
all the days of your life.
18 Thorns and thistles it shall bear for you,
and you shall eat the grass of the field.
19 By the sweat of your brow
you shall eat bread,
Until you return to the ground,
from which you were taken;
For you are dust,
and to dust you shall return."
Your alleged prophet is just wrong. And he should frankly be worried. It is not a good idea to misrepresent the Scriptures and lead people astray.
Have a Blessed Easter.