No, that is not true at all. Baha'is are instructed to continue seeking knowledge till the end of their lives, and in the next life! We are not limited to what the Messenger has revealed. Knowledge is knowledge.
What the Messengers reveal is what humans need and are capable of understanding at the time of revelation.
Just as Christ held back some of what He knew back in His day, Baha’u’llah held back some of what He knew in this day because we are not capable of comprehending it yet...
“Oh, would that the world could believe Me! Were all the things that lie enshrined within the heart of Bahá, and which the Lord, His God, the Lord of all names, hath taught Him, to be unveiled to mankind, every man on earth would be dumbfounded.......
In the future more of God’s truth will be revealed, more and more in each successive age.
Now you are speaking for God, as if you know what thinks. You are completely clueless as to what God thinks since you have no way to know.
Everything you believe about God is an ego projection.
No, all humans (not God's children, because God has no children) are not equal in God's Eyes. Quite the contrary.
“Let no one imagine that by Our assertion that all created things are the signs of the revelation of God is meant that—God forbid—all men, be they good or evil, pious or infidel, are equal in the sight of God.”
Gleanings From the Writings of Bahá’u’lláh, p. 187
God hides everything that He chooses to hide. Nothing is staring us in the face. All we can know of God is what the Messengers reveal.
God's Messengers do not 'tell people' what choices they should make. It is a free choice whether to believe in the Messengers and follow what they reveal. How many times have I told you this?