Yes. I agree with this. An infection anyplace including the root of the tooth can be a major problem. I personally fixed myself the root canal years ago. A year after I fixed it the dentist did an X ray and seen a root canal had a hole all the way through it. meaning typically they need to drill down the canal and clean it out.
Mine was already fixed by me. My dentist and the periodontist that looked at it couldn't believe it. I didn't say I fixed it I simply said what I did. One of the tests by periodontist test was to put an ice cube on the tooth for a few minutes. If its infected I wouldn't be able to keep it there.
I simply washed my mouth and soaked that tooth with Hydrogen peroxide. Hourly for days. sometimes I would mix in a high concentration of salt. The Salt was painful and I'm not sure if it was necessary.
The video suggests ionic silver and/or ozone to clean the cavity after removing the tooth. Which isn't a bad idea.
The video briefly said wisdom teeth effects the adrenal gland. Adrenal glad controls the natural hormones are the drivers of anxieties. What I found. Constant pain causes excesses expression of adrenaline which in the blood will become Adrenochrome.
https://www.hindawi.com/journals/ijd/2021/7642875/