Vaccines- yay or nay? And why?

My wife (37f) is now at a point where she doesn’t want our son (22 months) to be vaccinated anymore due to toxins being introduced into the body (she’s worried about the number of vaccines children get these days compared to what we received growing up, and that he could become autistic from it or suffer other longer term consequences). I (37m) am vehemently against this. I believe that vaccines are helpful in keeping not only individuals healthy but our communities as well. But I also do not follow functional medicine while my wife is starting to, so I just wanted an opinion on what individuals who are active in this community think about them, and should I handle this with my wife.

Also, for reference, my wife is following this program as our son does eczema and has issues with dairy products: https://www.ex-zema.com/home . The lady in charge of this said she doesn’t believe in vaccines, either.