Wrong.
"But now I have written to you not to keep company with anyone named a brother, who is sexually immoral, or covetous, or an idolater, or a reviler, or a drunkard, or an extortionernot even to eat with such a person." 1 Cor 5:11
The purpose of a church service is the gathering of believers to worship Christ. The purpose of a church is not to allow the unrepentant to attend until they convert believers to accept their sin.
Yes, and sinners make up 100% of the population of the Church. Its not a house for the perfect, but for those seeking Christ. And yes, even some with same sex attraction are seeking Christ. But yes, they need to seek to live a celibate life. information)