i had similar feelings regarding these kind of posts.
it is very easy to spot weaknesses in the genuinity (if such word exists
) of such posts as they have several weaknesses in common.
1, the improper use of islamic terminologies
2, lack of regard to the use of holy words such as Allah without using (swt) Muhammad without using (pbuh) etc
3, the person appears with his/her first post and doesn't reappear after receiving the replies to the post in question
4, and if all the above are untrue and the case seems to be genuine, then the person in question lacks Islamic knowledge which can be easily seen from his/her post.
some may claim he/she has been muslim for so many years and now has doubts about .....
the number of years is not important. the important issue is, why the person accepted islam in the first place. the inti-islamic propaganda and all these commonly known questions and doubts certainly existed before the person in question accepted islam anyway and i find it hard to accept that he/she never heard of such propaganda before.
one more issue, if a person doesn't perform islamic obligations and seeks knowledge from anti-islamic sources and persons, then the outcome can easily be a negative one.
thats why it is mandatory on every muslim man and every muslim woman to seek knowledge of islam (from islamic resources ofcourse).
Allah swt knows best
wassalamu ala man-ittaba7alhuda