The point of that paragraph was to show that the criteria listed by that author does include viruses. Making the article relevant.
Here is the quote:
"This definition notably includes viruses, which do not qualify under narrower definitions as they are acellular and do not metabolise. Broader definitions of life may also include theoretical non-carbon-based life and other alternative biology."
Actually the article not only mentions that it is talking about organisms many times, like here in the defining opening sentence:
"Properties common to the known organisms found on Earth (plants, animals, fungi, protists, archaea and bacteria) are that they are carbon-and-water-based, are cellular with complex organization, undergo metabolism, possess a capacity to grow, respond to stimuli, reproduce and, through natural selection, adapt in succeeding generations."
It did ask that but it also asked that of organisms too. In fact, in the above paragraph you will note that not only does it ask it of all orgnanisms but it even asks it of theoretical life forms as well.
Which is a sentence included in the paragraph about exceptions.
