Well, to be fair, COVID-19 has done two things - provided a sharper indication of which homes were the problem (as problem homes would suffer much more from the impact than the ones competently doing the job they're tasked with), and provided an incentive to actually start cleaning up the problem. It would have been nice if it were dealt with before another emergency basically forced it to become an issue actually requiring action, though, since it meant deaths that were avoidable.
"You know how parents tell you everything's going to fine, but you know they're lying to make you feel better? Everything's going to be fine." - The Doctor