Most evangelical "churches" I know of would just try to find a way to make this a "welcoming" experience.
The apostasy of the churches is exactly why the demonic culture is overrunning all quarters.
Really? 'Cuz most of the genuine Evangelical churches I know of would have nothing to do with such a thing. Certainly, some "mainline" Protestant denominations have degraded to the point that the Bible is no longer relevant much less its strictures against homosexual acts or any other depravity God says is an abomination. Apostasy happens within individual hearts, one at a time, and, as they meet critical mass within their faith communities - with no resistance - so goes the community. It is something EACH believer must guard against and, if he finds no others willing to stand with him for the truth, must leave and seek out fellowship with those that do. Christians should never compromise and tolerate sin.