There was definitely a boom of new home gardeners as a consequence of the pandemic. I could see the increased demand leading to cut corners and higher chances of mix-ups. No idea and no data to support if that increased demand has actually kept up enough to account for this year however. It's also possible more inexperienced growers simply means more chances for user error and therefore more reporting of issues.
I've heard rumors that there was likely a mix up at a large seed supplier, but haven't been able to find any reliable confirmation.
My "bell pepper" seeds ended up being some sort of wax and some spherical pepper I can't identify yet haha. But I bought them cheap at a hardware store and didn't expect quality control.