The reason people care is that in capitalism anything that sells well will continue to be made. Resources are devoted to churning out worse and worse games and the large swath of people who don’t notice or don’t care continue to buy them, feeding the cycle.
Meanwhile good games, often indie titles, are overlooked by people who neither have the time or energy to look for these games which contributes to them being buried and lost to time. CoD now has confirmation they can churn out turboshit, charge beyond full price, and still outsell a game that is of higher quality.
Bad games doing well drags the entire market down with it. It shows companies they don’t need to try that hard if they’re popular. That’s why people care.