It will also be useful for those wanting to avoid LGBT+ people and acceptance. I realize this isn't the intent, but it will be divisive (cause division).
LGBT+ members need/want a site like this because they want to be safe while traveling and exploring the world. Bigoted fools don't have any real risk going somewhere with LGBT+ rights.
I don't see the usefulness of this site being whether you should go to a deeply religious country engulfed in civil war, as is unfortunately the case in some countries. I think this is far more valuable when considering countries that some people might not know too much about. Like if you want to go to Kiev for a week. I've been there and as a straight guy I couldn't tell you if going there as an LGBT+ person would be safe or not. That's where I see the real value.