This is not to imply I disagree with you.
The original question prompts me to recall this bit of news from earlier.
Take it as you will…
https://theconversation.com/is-it-safe-to-have-more-than-one-type-of-covid-vaccine-and-other-questions-answered-by-an-immunologist-150400
https://theconversation.com/is-it-safe-to-have-more-than-one-type-of-covid-vaccine-and-other-questions-answered-by-an-immunologist-150400