I don’t think that was the conclusion. Have a read it’s not that long.
On a personal note, one could interpret it that way if they disregard their ability to transmit their viral load to someone who hasn’t been infected yet. You are probably fine from hospitalization, but you can’t stop from transmitting it to others who may not be fine for a number of reasons.
I am also not sure there has been a great deal of research yet on just how long infection protects you or others, especially from evolving variants still to come. I already have some anecdata (two points) of reinfection of people who were double vaccinated. (Pre and post vax), so we are still in the Wild West in my opinion, so I’m keeping my six shooter drawn.