First of all, it's not regrettable. It's perfectly understandable and acceptable for people to reject certain abhorrent behaviors and the people who practice them.
Secondly, the statement isn't even true. Name any cases of "serious discrimination and maltreatment" of these perverts. And calling them "fags" doesn't really count, except under the Sticks and Stones Act of 2007.
Don't forget that the people who would be doing most of the "discrimination" are the ones they are letting in in droves - i.e. muslims.