No you are incorrect; the Church has authority and protection by infallibility on matters of moral and theological teaching and this includes teachings that are consistent on the matter of homosexaulity (these have been upheld and taught since the beginning of the Church).
newadvent.org/cathen/07790a.htm
That is the correct understanding of Church infallibility.
These are the organs in which infallibility is found in the Church:
•the bishops dispersed throughout the world in union with the Holy See;
•ecumenical councils under the headship of the pope; and
•the pope himself separately.
Christ taught us when our brothers are sinning against us Matthew 18:
“If your brother 12 sins (against you), go and tell him his fault between you and him alone. If he listens to you, you have won over your brother.
16
13 If he does not listen, take one or two others along with you, so that ‘every fact may be established on the testimony of two or three witnesses.’
17
If he refuses to listen to them, tell the church. 14 If he refuses to listen even to the church, then treat him as you would a Gentile or a tax collector.”
We are not saying throw them out and say you can never be a part of this church, but what we are saying is that this couple who at present are acting at the very least in a scandalous way should not simply be able to walk around as a member of the community as if nothing wrong is going on. For them to partake in the Eucharist and have a very active role despite public scandal because it gives people the impression that this is really not a problem (which is erroneous). We are saying they need to be confronted on the matter for the sake of their salvation (if indeed they are doing what they make it sound like they are)- that is true charity. Otherwise a math teacher should allow people to say 2+2 =5 even if we say this is wrong and not correct them. We welcome all, but we are all called to conform to Christ. It would be one thing if they were struggling with the sin and wanted to change, but instead they openly celebrate at the very least scandal (which is a sin). Did Christ tell the rich man actually no he didn’t have to give up his things to follow Him just to increase the size of the flock? No even if that meant getting the rich man’s family and people he influenced on board with him. To be with Christ means taking up your cross daily and following him (and his commandments which are taught today by the Church- otherwise hell prevailed and the Church is a liar and we cannot trust anyone to know the truth). These men may indeed have the cross of homosexual desires, but they are called to purity and chastity just as single people or clergy. As Christ told Paul about his own matter about the flesh, His grace is sufficient.