Dear common,
Is the issue medical opinions, or kovod hatorah?
If it is the latter, we should start with topics that are not vital. And, where the speaker is clearly advocating for the destruction of our Torah based community. There are many such personalities, some receive a lot of respect from us. Keep in mind that kovod hatorah includes using it as a tool to promote oneself. We shouldn’t ban someone that the community needs their service, even if they are of detrimental character. When the fireman arrives to extinguish the fire, his opinions do not matter.
Though it seems to me that you are bothered by doctors giving opinions that interfere with the halachah. Well, in serious medical matters they have the right. One who has the knowledge to save lives, is required to do so. Even if it is not respect for the Rov, it is kovod hatorah to put jewish lives. This scenario happened many times, the cholora outbreak in Vilna, the cantonists, the Mir yeshiva’s escape, and so on. Today no one says that it was a lack of kovod hatorah. It is very clear that saving lives requires us not too ask to many halachic questions. The doctor has the solicited opinion of being docheh shabbos. Who would solicit someone with no medical knowledge, for a matter of life and death? If A rov says that you can drive to the hospital on shabbos for a hangnail, but you cannot for a child with a high fever, would you listen?
P. S. I have no idea who this doctor is or what he said. And I am trying not to find out. If he was discussing politics or some other nonsense, I am not defending that.