Well, since you didn't provide any example of "famous YouTuber" incidents, it's hard to judge. For certain, if they were livestreaming it implies not adhering to journalistic due diligence. And depending on the situation, it might have been clear, there was nothing of public interest around. Maybe people have asked not to be filmed. Quite easy to construct something as something else entirely, especially, if the outrage is weighed in ad-money. In any case, misbehaving police doesn't mean much either to the argument. Isolated incidents don't reflect the situation of a country. The question is about legality, which can only be considered by the ultimate outcome when legally challenged. Did those YouTubers press charges?
> Otherwise, the presumption of innocence applies
No, the police is allowed act on experience and context. Eg. "racial profiling" is legal in certain areas.
> The same assumption was made about them as you are making now ("Oh, boy...")
The Oh boy was due to the US human rights report reference, implying people in Germany care no less. Doubtfully in good faith, otherwise such a wild thing to bring up/fall for in 2025. I mean, praising the US as a bastion of democratic virtue is frankly insane. "Two" party system, gerrymandering, banned books, religious/political indoctrination of children, limited bodily self-determination and -expression, secret courts, total surveillance, no rule of law, press banned, killing of journalists, blatant misinformation and erasure/rewriting unpleasant history, .... But yeah, great you can legally buy everything you need to shoot up a school and legally mock the victims afterwards. The hustle more sacred than voting.
Honestly, their take on "press freedom" you praised, what does it amount to in your opinion? Because to me, sure enough, "truth" means nothing to freedom, if you neglect the bigger picture, which makes information actionable. Germany does far, far better with the bigger picture. It's straight dishonest to get hung up on some single incidences, which may, or may not have happened.
And looking forward, the laws around freedom of press didn't think of YouTube, Twitch and TikTok, when written. Information traveled slower, lies could be exposed and corrected. In today's world, we need to figure out a way to deal with Russian troll farms, Heritage Foundation campaigns, billionaire hubris, and algorithms enslaving people's minds. Exposure isn't any longer the corrective factor, but outreach and attention is. A large chunk of the population is already caught in some kind of alternative reality, completely immune to facts and reason.
I am off, good luck.