The relevancy is mostly for the decisions on what status to give people that had it. E.g. do you treat proof of a past infection as equal to vaccinated status? For how long? how do you handle boosters for them? ... (E.g. in here in Germany an infection that's 1-6 months ago is in many ways treated the same as being vaccinated, after 6 months a single booster shot gives vaccinated status (based on results that at that point a booster helps improve immunity). These policies and how to adjust them depend on such results)
Yes, you also have to suffer being sick which can be very bad even if it doesn't kill you.
It's a sign of the weird conversations going on in our times that Science Magazine feels the need remind people that getting sick is bad in the title of this article.
