I think that the Tanners are overzealous in their desire to expose Mormonism for what they believe that it is, but "hate", I don't think so.
You would be wrong.
Is it hate or zealotry when a person exhibits desires to evangelize their beliefs?
That's NOT "only" what they are doing. If they were that would be okay.
If a person's belief is that their version of Christianity is being corrupted by another sect, then it could easily be understood that such a person has only honest motives to help others be not deceived.
Again, that's NOT "only" what they are doing. If it was, that would be okay.
There is nothing inheriantly wrong with "comparative religion", for Mormons do it ourselves sometimes.
What is wrong, is to "falsely compare". That is what the Tanners do, and in fact ALL anti-mormons do. The rare honest critic however doesn't do this, thus we know it's possible to actually be an "honest" critic.
I know that as a Mormon missionary, me and the other 180 missionaries in my mission helped every Catholic believer to see that their religion was lacking and ours more valid.
And such is a reasonable, fair, and valid action, which is why Mormons do it, and anti-mormons don't.
I know that I didn't proselytize with hate, despite convincing dozens of persons that Catholicism was wrong enough that another religion was needed.
You're right, you didn't..... And that is the point. You presented additional views and ideas, which showed how another Faith simply didn't have the full truth or the correct truth. That is a perfectly reasonable action. Anti-mormons however, present a "distorted" Mormonism, and then proceed to attack and degrade it.
Mormons have nothing wrong with competing ideas, and sides competing against each other. There is nothing "immoral" with that. What is immoral is what anti-mormons do, that is because of their hatred, they pervert and present a masterfully distored Mormonism, that they they easily attack. That IS WRONG..... and that IS Immoral!