I disagree. The responsibility has and should always remain entirely with the person taking the action. If speaking imprecisely on the Internet is a liability then nobody can speak at all.
Random YouTube maker videos have virtually zero duty of care to their audience.
I say virtually because I could imagine a maliciously crafted video designed to lull a watcher into inadvertently blowing themselves up, but even in the case of a prank video which gives knowingly false/dangerous instructions I’m still not sure of this is something people can or should be held liable for.
If you are handling dangerous chemicals, it is your own personal responsibility to have proper tools, training, and certification to do so safely. Being able to find false information on the internet doesn’t in any way absolve you from the responsibility or shift the blame to someone else.
A moral/legal system which would shift liability to a random YouTube video has a lot of highly undesirable side-effects in terms of stifling free speech, and free exchange of ideas.