The practice of rounding up and executing gays are not confined to the Republic of Chechenya. Even in the middle eastern nations such as Saudi Arabia and Kuwait, the same practice is followed, although they never face the same amount of criticism which Kadyrov face.
I will believe the first part, when you could present concrete evidence to support your wild claim. And regarding the second part, Yes. Kadyrov and his goons had killed dozens of Russian soldiers during the 1990s. But after almost a decade, his father was assassinated by the rebels for supporting Russia.