Your chance of catching it are high, whether now or in the future. It's like the flu. Covid exists and it's not going away. The more of us healthy people who catch it and don't get sick and turn into petri dishes of death and lung disease, the closer we get to herd immunity, if there is such a thing. Either way, just like any contagion, it's your responsibly to maintain a healthy lifestyle in order to avoid deadly consequences. That doesn't mean hiding from it, that means maintaining a strong body and immune system

That person isn't providing any sources for their calculations. Sorry, but I can't help there