Its 2022, I dont think its the big deal it would have been say 10 / 20 years ago. Hes only 17, so grown up in a generation where being gay is no longer taboo and its a lot more acceptable to be who you want to be. There will always be haters and homophobics, but id say they will be more and more in a minority as time goes by.

Best of luck to him, hopefully it will encourage others in the game who have felt they have had to hide their sexuality to come out too.