The really sad issue is that not vaccinating has the potential for real harm, not only to the immediate children not vaccinated, but to other members of the population who are then put at risk due to the diminution of herd immunity. If a large percentage of the population is all immune due to vaccination, then viral diseases have no safe harbor and tend to diminish their activity due to a lack of acceptable hosts, but when the percentage of the population not vaccinated rises, they put themselves and other members of the population at increased risk due to having viable hosts in the population who can become ill, let the virus proliferate and mutate, and spread the virus further.
There are always going to be some folks whose immunity has waned, or who legitimately cannot be vaccinated ( serious egg allergies are one uncommon, but real reason I believe)
I know an individual who has refused to have all three of her children vaccinated, despite the advice of her parents, and three physicians. This is about emotion, not about logic that is for certain.
Unfortunately you can find any hokum you desire to listen to on the WEB. One of the modern disadvantages we live with today. Click bait comes in many forms. YouTube has no desire to present only true information - there is no money in that effort, instead tell fools what they want to hear and collect the coins from click-bait.