Product Managers are only as great as the last new shiny product feature they deliver. This is a systematic problem for companies. Product Teams rarely prioritise fixing technical debt that is actually resulting in significant operational overhead. They prefer to focus on yet another shiny feature, as it is much easier to market.
"We need to spend some time fixing technical debt for the last product feature we rushed to market, as it generates too many support tickets."
versus
"We delivered dark mode. Shiny!"