Yes. If you're going somewhere with a higher-than-usual risk to yourself compared to more traditional tourist locations you should definitely register yourself with STEP (or the equivalent for your home country).
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.