It seems PRO has forfeited his first round so I will take the liberty to begin
I. Limits of leadership
As a democratic nation, Yoweri Museveni was elected by the people to lead the country so we must understand that as the president, Museveni is entitled to pass whatever laws he deems for his nation and its people, regardless of the feeling and opinions third-parties have on the matter. In reality, despite their best efforts, political leaders cannot please everyone.
II. Cultural Ideologies
It's also important to acknowledge every culture have their own set of beliefs and values. We know that Uganda is a conservative country with a large religious populous. We also know religions' resentment towards homosexuality, since for the most part, it is seen as a sin and considered a threat to their traditions. Even if one was to say religion is not involved, you could argue that this resentment is also rooted from the traditional African cultures, in which they express family substance and importance of reproduction.
With these 2 points being said, Museveni and Uganda have the undisputed right to pass laws that coincide with their traditions without having the west obtruding their peripheral opinions on the matter. It's essential to respect any nation's right to carry out their rulings.
Since I wasn't even supposed to go first, I will conclude my argument here for the time being. I'll let PRO expand on the statement. I'm curious what PRO's argument and motive is as they're the one that started this debate. Good luck!