From a purely scientific perspective, devoid of any compassion or morality, creating and unleashing a virus which disproportionately targets the old and the infirm is good for the economy.
In no way do I endorse or advocate that such a program be implemented, but historically, there have been political regimes which have used similar methods to stimulate economic growth through selective genocide.
Old and sick people are a burden to every economy, because the cost of their care exceeds their current contributions. If every person born before 1950 died tomorrow, the global economy would suddenly be in great shape. This is unthinkable to anyone with an ounce of human decency, but human decency has never been a prerequisite to holding political office.