How is it possible that cardiologists for so long don’t want to recognize the truth?

https://nutritionfacts.org/video/do-heart-stent-procedures-work-for-angina-chest-pain/?utm_source=NutritionFacts.org&utm_campaign=117bcd35dd-RSS_VIDEO_DAILY&utm_medium=email&utm_term=0_40f9e497d1-117bcd35dd-23768817&mc_cid=117bcd35dd&mc_eid=81a4c2b06c

And this likely true for many more other specialist areas in medicine….