That's part of the problem right there. An LDS member will say "I believe in Christ" where the anti-LDS poster will say "You don't believe in Christ you just believe in someone with the same name". That is an attack on the LDS faith diminishing the importance of Jesus Christ in our religion.
It along the same lines as claiming that the LDS Church believes Jesus Christ is only a prophet and not divine. Yes I have seen this statement here at FR and it is false. Also an attack on the LDS faith again diminishing the importance of Jesus Christ in our religion.
If I say "the LDS Church believes that Jesus Christ is the Son of God", then a someone else says "My church believes Jesus Christ IS God incarnate" that is absolutely fine with me. Shows the differences between the two religions. Neither is directly attacking the others religion and only talking about their own religions beliefs.
From there an honest civil discourse can happen between the two and hash out what each believes and each can honestly learn something about the other faith, and maybe even strengthen each others testimonies about their respective faiths.
On the other hand if I say "the LDS Church believes that Jesus Christ is the Son of God" and someone chimes in with the anti-mormon talking points of "the mormons believe that God and Mary had sex!" that neither is honest (that is not at all LDS doctrine nor common belief), nor does it do anything to teach others about their own faith. It is simply an attack on the LDS beliefs for the select purpose of trying to make the LDS church look bad regardless of the statement's accuracy.
I say what I believe, not other people. Even the current President of the LDS Church does not say what I believe. If he says something I have questions about I think, pray, read the scriptures (and I go to the Bible first, then the BoM, followed by the PogP, then finally D&C), pray again, then make my own decision based on promptings of the Spirit. We as LDS members have been counciled to do this thing quite often on everything and not just follow our leaders on blind faith.
Yes there are many things I disagree with the leaders of the church on, most but not all of them are matters of policy and not doctrine. None of them are considered absolute "you have to believe this or you can't be LDS" doctrine. Then there are also things that I just don't know the absolute answer to, nor do I really care to because it doesn't matter in the grand scheme of things. The supposed location of the Garden of Eden is an example, does it really matter in the grand scheme of things? Nope not at all.
But who is your Jesus? I think we part company on that one item. Jesus was not satan’s brother. He was the only begotten son of God himself, born of a virgin, died for us on the cross and rose again. Jesus can mean different things to different religious groups.