No, he's not. No leftoid would hold the conservative views he holds. Are you aware that leftists are accusing him of being "right-wing" over his stance on the border, on immigration, on guns, on Israel, etc.?
No, he does not think those who disagree with the climate-change claims should be jailed.
Go watch the whole segment. Johnny Maga snipped most of the segment on abortion. He snipped the part where Kennedy says, "I think there's a very good argument that the state has an interest, a compelling argument, has an interest in protecting a fully formed fetus. I absolutely think that that argument is very convincing," but that he still thinks the woman should have the final say. He also says, "I don't think it's ever ok" to abort a late-term baby. Then, he says "we should do everything in our power to make sure that never happens"--everything short of a mandate from the state.
And, if you read his full statement on abortion, he says "every abortion is a tragedy," and then explains that he will take numerous actions to reduce the number of abortions by educating women about abortion, by educating women not to fear child birth, by raising the child tax credit, by providing funding to enable poor mothers to be able to have their babies, by making adoption easier and more affordable, etc., etc.
In short, he believes abortion is wrong and that we should seek to persuade and incentivize women not have abortions, that we should do all we can to reduce the number of abortions, but he also believes that the woman should have the final say.
As a pro-lifer, I can tolerate Kennedy's position on abortion. I find it much less offensive than the standard liberal view on abortion. I can tolerate Kennedy's position because he acknowledges that abortion is wrong and a tragedy and because he is committed to reducing the number of abortions. Plus, after Dobbs, it really does not make a huge difference what a President thinks about abortion because abortion is now a state issue. The Supreme Court has already ruled that states can impose bans on abortion after a certain period of time.