Say a a kid started throwing tantrums at school. By not punishing/ removing him you restrict the freedom of everyone else.
Fuck ads. What's absurd is tolerating them and the damage they do to media, consumers, kids, lesser and/or more honest businesses, culture, products, and so on all the way to the Windows and macOS system UIs.
At the same time, this has the same energy of "if we release all the files, the system will collapse". Maybe we need the billionaires to feel some pain sometimes (even if yes, we'll feel more overall).
Ads are speech.
No, they are not.
People have been brainwashed and legal systems have been paid and bought for to consider them as such, just like corporations have been whitewashed to be treated as "persons".
In any case, we regulate all other kinds of speech as well: explicit content, libel, classified information, cigarette ads, and so on.
I don’t think you need to count companies being able to put any message out there as free speech.
Granted, that's proven to be a horrible concept. So let's repeal that.