Saying anything less than glowingly positive about Rossmann is dangerous due to his fan base, but I think this mentality of pre-forgiving his misinformation is not healthy.
Being passionate and putting on a vulnerable schtick shouldn’t excuse someone from misleading their large audience.
Rossman is a drama YouTuber, like many others. This is an entire YouTube genre. Most of them have the same schtick where they appear to be the most passionate, vulnerable, on-your-side narrator of a story. His schtick is common in the drama YouTuber genre.
You shouldn’t develop such a parasocial relationship with a person that you reflexively defend every topic they engage in. Discuss the topics each on their own factual merits and be prepared to look for second sources. Don’t align yourself with someone because they are passionate and appear “vulnerable”. At the end of the day, you need to remember that putting on this display is how he makes his money. It’s a show.