Salaam Rokeya,
I cannot post on the Advice and Support section as I am not a member of the Sisters' one.
I like to say the following points that;-
1 Any evil person would have been afraid, and begged to do anything if he was spared. Prophet Muhammad peace be upon him was no liar, so no matter how many times he was squeezed by the angel, he remained honest.
2.If the angel appeared to his Khadijah (Uncle that you mentioned??), how will she know better then the Prophet?? How can anybody verify unless from God's presence??? Of course anyone would wish to consult someone if their husband was saying this, so she did and he simply stated that yes we are awaiting for another Prophet. Prophet Muhammad peace be upon him already knew as he was told to recite "in the name of his Lord".
3.Allah SPOKE to Prophet Moses peace be upon him through a burning bush. He was also told by Allah not to be in fear.
4.There is no conflict, we follow all the Prophets, we follow the 10 commandments. We don't accept interest, we haven't changed our texts were the Jews say that Hell does not exist and the Christians for their idol worship.
5.The Quran and the laws given to Prophet Moses peace be upon him are treated no differently to the Muslims, and as per the Prophet Ibrahim peace be upon him we follow the Prophets more, we sacrifice the animals and bow down in prayer. So of course non-Muslims are trying to say that their ways are better (when they do not follow what all the Prophets have taught, that there is one God, the Day of Judgement, Paradise and Hell).
6.Lastly Muslim woman (on the thread that you created) was right it is the way of the devil to ask these questions (nothing wrong with asking questions), but these are clearly to try and show that Prophet Muhammad peace be upon him was not a worthy Prophet-of course he is and the Muslims have been successful today, as if we did not have him we would be in error. Even at the time of the Prophet, idol worship, lewd behaviour was strife, and the Jews (for looking for the life of this world) and the Christians (for their idol worship) did not help them. Of course when there are burning question, when you continue to pray, read the Quran, answers are clear- which you should strongly do, instead of spending time speculating this and that.