Do the mentioned verses mean that Christians are right and their religion is true, and that they should not be disputed?

No Christian, after the Prophet Muhammad (peace be upon him) was sent and after they became aware of his message, can adhere to a religion other than Islam; because Islam abrogated all previous religions, as confirmed by the Almighty's saying: "And whoever seeks a religion other than Islam, it will never be accepted from him, and in the Hereafter, he will be among the losers." The verses mentioned do not serve as an argument for the validity of Christians remaining in their religion without embracing Islam; rather, they call upon them to follow the Prophet Muhammad and believe in what was revealed to him.