I doubt that, free speech is for people not for governments. And an ad is a commercial relationship, both parts have to agree. They are still free to upload it

I doubt that, free speech is for people not for governments. And an ad is a commercial relationship, both parts have to agree. They are still free to upload it as a normal video to their channel, they went the ad route because people would not normally support it but as an ad they can force them to watch.