That does not speak to the meaning of “intolerant” and is wrongheaded as well. Jesus was telling his Jewish disciples that his ministry was not limited to the Jews.
And when Jesus says in John 10:16 that "They too will listen to my voice..." He is describing sheep of another stripe.
Just as the Pharisees were intolerant toward the Samaritans, and Jesus used a parable of the Good Samaritan to get their attention to their intolerance of all Samaritans, and just as Paul had to have it out with Peter (Cephas) over Jewish intolerance to the Gentiles, so it's been with the Mormons.
That does not speak to the meaning of “intolerant” and is wrongheaded as well.
Sure it was intolerance -- just like some of the Jews were intolerant toward Gentiles being grafted into God's people:
Look at Galatians 2: They agreed that we should go to the Gentiles, and they to the circumcised. 10 All they asked was that we should continue to remember the poor, the very thing I had been eager to do all along. 11 When Cephas came to Antioch, I opposed him to his face, because he stood condemned. 12 For before certain men came from James, he used to eat with the Gentiles. But when they arrived, he began to draw back and separate himself from the Gentiles because he was afraid of those who belonged to the circumcision group. 13 The other Jews joined him in his hypocrisy, so that by their hypocrisy even Barnabas was led astray.
'Twas outright hypocrisy, as Paul says. 'Twas intolerance on the part of Peter. 'Twas wrongheaded on the part of Peter.