The issue is the type that's commonly associated with China, where exotic animals are slaughtered on site, and often feature animals that are very risky due to them potentially carrying zoonotic diseases that can affect humans. They've been a known risk of developing coronaviruses ever since the SARS outbreak 17 years ago. Although the outbreak is now comparatively smaller to COVID-19 novel, it didn't become as widespread as overseas tourism from China (and vice versa) wasn't as big as it was in recent years. I recall not seeing many Chinese tourists a decade ago, but a lot in recent years, so it's making me think that mass tourism to overseas countries was still being encouraged despite Wuhan and other cities in China being quarantined, and that possibly played a huge part in its worldwide spread. Not to mention those coming back from those regions of China where those risky markets operate could have also brought the disease home.