It is against the TOS, and also basically wrong, disrespectul.
Admittedly, I can be accused of doing so myself, but my criticisms tend to be aimed at hypocrisy in terms of folks cherry picking what Scripture to cite or claim to follow and which to ignore or in regards to their arrogance and dismissive attitudes towards other faiths.
Although I must also admit crossing the line into mockery isn't all that difficult either, especially since my responses can be reactive, at the same level as they are received and responded, so I might cross a line I'd rather not,,,
But bottom line, my issue is not so much the faith, but about those who claim to have it yet do not live it while they condemn others for not sharing their ideology.