[Veratyr]

An unbiased explanation of the differences: https://ods.od.nih.gov/factsheets/Iron-HealthProfessional/

I really can't be bothered watching the video but I had a look at the first article it "quotes" (https://www.mja.com.au/system/files/issues/196_10_040612_sup...). The video says:

"no more likely to suffer from iron deficiency anaemia than non-vegetarians"

But has actually deliberately erased the context (it uses the same PDF, the rest has been whited out in the screenshot):

"[In Western countries like Australia, where we enjoy a varied food supply,] vegetarians are no more likely to suffer from iron deficiency anaemia than non-vegetarians."

And shamelessly cherry picked:

"but a number of studies suggest that vegetarians are at greater risk of having low iron stores (as reflected by serum ferritin)."

So I'm going to suggest that people not pay this video much mind.