[1] https://www.vanityfair.com/news/2021/07/right-wing-vaccine-r...
From [1] he says "Unless we really have a compelling case, no one under age 30 should receive any one of these vaccines." Hardly sounds unreasonable to me much less misinformation.
[2] https://healthfeedback.org/claimreview/vaccines-are-a-safer-...
From [2] they do not give an actual quote of him but undoubtedly a bastardized paraphrasing.
[3] https://factcheck.afp.com/us-cardiologist-makes-false-claims...
From [3] they rebut his claims that healthy people under 50 years do not NEED the vaccine for their own benefit by claiming they were the primary spreaders in the summer of 2020 (prior to vaccine availability) which is quite the non-sequitur.
None of these factchecks are compelling. Even so, I'd argue doctors should be able to voice their opinions without reprisals and slanders. By cutting off the debate you stall out anyone already on the fence but open to discussion.