In the Gemara there are places that seem to reflect negatively on Jesus. I noted in the Tosphot HaRosh that that particular Yeshu could not have been Jesus since the Yeshu referred to in the Talmud was a disciple of R. Yehoshua ben P'rachia. That is he was right in the middle of the period of the second Temple. And Jesus was at the end of that period. That is a difference of about 150 years or more.

[Mixing this up is like mixing yourself up with someone born in 1872. ]

The disadvantage of this is that Christians do not gin from the perspective of the gemara [Talmud] in which the laws of the Torah are taken literally, not allegorically. And it is this allegorical interpretation of the laws which is the Achilles heel of  Christianity. So the prohibition against homosexuality is thought to be an allegory. There have to be laws they understand in order to have a functioning society, but then instead of God's laws they have to have man made laws.