I'm a might bit confused by the tag "sport" here. When did card games become a sport?
About the same time mahjongg did, I suppose.
Mahjongg has been competitive for over a thousand years, internationally for roughly 100 years and standardized in a modern fashion and internationally categorized as a sport for around 25 years so no, that is wrong.
MTG is only barely that old itself and had half-assedly standardized in order to try to start competitive matches in the US around 1997, but changed the rules slightly with every expansion until around 10 years ago. All of this seriously limited interest in large-scale competition because it's obviously a cash grab.
Since then MTG has stabilized a bit but is a looong way from being recognized by any country as a sport.