The translations of name is also misleading, God didn't name anyone as Muslims, he titled them as submitters, but all the emphasis on submission was to say, yes, Mohammad (s) has complete authority on you, and you have to follow and obey him, but it's not out of intention to submit to a human nor what he wishes, but rather he is calling to God.
And God understands it looks like we completely submitting to Mohammad (s), so emphasizes, among the titles of the religion of truth, is submitting to God. That is how you look at from one angle.
But what does it mean to submit and accept God's guidance? It means to rise up, believe in God and his light, hold on to the rope of God, follow the leaders appointed by God through clear proof, to fight and strive for your soul, to take with great power the book and sacred teachings, and over come the dark sorcery.
It's just one angle, that we are submitting to God and it's brought always in discussion, of their accusation that Mohammad (s) was a sorcerer trying to gain sway in the land and control and change their ways and instead decide the fate of humans.
It's a place of understanding, say, it seems like Mohammad (s) seeks a reward, but really, the path of God is submission to him, then explains the way to do that to be through his chosen Messengers and books and holding to their light, and God doesn't speak vainly.
He is telling humans, yes, I understand Mohammad (s) looks power hungry as if seeking a personal reward, but really, the chosen families are the means of God towards himself and there is a wisdom.
Ultimately Abraham and Mohammad and his family are titled that as well, to show, they weren't making up **** and getting people to submit to their desires, like rest of humans and Jinn, but rather, were themselves holding to God's light and revelation, and the branches (members of a chosen families) were all submitters to God and means of submission.
And it understand that obeying God and Messenger, looks like what disbelievers would say "will we prostrate to what you command....", and this is hard, to submit your whole soul against your desires to a human that is living.
We can easily do it now with Mohammad (s) only because we can choose a lot now, but when the Mahdi (a) comes, and what he says is truth and insights we must grasp right away and do away with our conceptions, we may become stubborn.
So the trial of submitting to a living guide in the open is not here right now. This is not submission to God through a Messenger, this is following opinions some your own, some from the Messenger, some from God but there is no religion of truth that is submission to God today.
It's hidden among a few dispersed humans who follow the guide of our time and work to help establish justice and enlightenment, but this religion we call Islam is as the Christian person who write pink said, it's unrealistic, Muslims are not on that, and the proof is their is for every possible view of Quran you can have, even if the Quran by that view is contradictory and contradicts itself is found among Muslims.
There is no agreement, not even on Tawheed, not on what consists Nubuwa or Messengerhood or Leadership, it's all disagreed upon, even what Angels are, is disagreed upon, nothing do we agree upon. Nothing.
Don't tell me titling yourself Muslim is useful now. It's not. It's foolishness.
God was pleased with submission as the religion only on certain conditions as explained in the 5th Surah, but people don't understand, so we deviated like Christians and Jews and became of opinions and far away from the path, the light, the illiyin and don't witness the guide in our hearts let alone understand what Quran said regarding him. We are a lost nation blind, blind almost beyond repair because we've become stubborn to our idols created through generations of deception and dark magic upon us.