Like The E said...
Also, if it's not a joke, that makes it even worse. Recommendations are made on things you can make some kind of choice on.
You can't choose your country of birth, and you can't choose your sexual orientation.
Only a very small minority of world's population can choose their country of residence, and even less can choose their nationality.
Your suggestion can be interpreted in two ways: Gay people in Uganda/Nigeria/Russia should stop being gay (which is impossible) or leave their home country (which, for the majority, is also impossible).
So you're making a "suggestion" that is, generally, impossible to comply with. Not only is it not a solution at all, it's basically offensive too. Do you have any other clever insights? Maybe a suggestion that if North Koreans are unhappy with their leader they should leave the country or start an uprising to depose the Kim dynasty?
I think the most important in this case, the fact that people in both Uganda and Nigeria have more significant problems, gays or not.
I disagree. Legal persecution in any form is, or quickly becomes, probably the worst problem any country can possibly have.
At least here in Russia, we do have 
So... Let's say it's not the worst issue.
What, then, do you think are the "worse issues" than legally sanctioned persecution of a particular group of people?
And by the way I don't like all that "gay" and "tolerate" stuff.
No one's saying you have to like things. You just have to accept that homosexuality is a naturally occurring thing in human species. It shouldn't be something to be "tolerated". How does someone being homosexual affect your personal existence negatively?
I don't want my children became gay. But if they eventually will... I will not shoot them.
A person does not "become gay" any more than they "become a male" or "become a female".
If you expect some kind of sympathy points for the noble compromise of not killing someone different, you'll be sorely disappointed.
But again, I want less gay propaganda and that's it.
See, the problem is you don't seem to understand the difference between "propaganda" and "education".
Propaganda is politically motivated and usually aimed to spread false information against a particular ideology or group of people.
Education's aim is to spread correct information so that people can make decisions without being influenced by propaganda and other misinformation.
In this case, for example, I'll educate you of two things:
1. Homosexuality is not a matter of choice, nor is it a "disease you can catch"
2. "gay propaganda" does not cause or spread homosexuality. It's not a mental disease to catch.