Yes. This is the thing here. Trump's handling of covid was inexcusable and he absolutely has many people's blood (speckled with bits of their lungs and other organs) on his hands, but it was a relatively unexpected and unknown thing, albeit resulting in an utterly botched response. Still, some response was at least attempted during the Trump years, even if he doesn't deserve credit for the positive aspects of that attempt. The Biden admin however, they knew full well what it was, how it killed, and how it could be prevented, and even made it into office in part because of their promise that they would better handle it. Instead they pretended it didn't exist anymore, actively dismantling the attempt at a response, and now we don't know how many people died because of that, which was largely the point of their sweeping everything under the rug (that and making sure the proles get back to work, know their place, and make line go up).

It's not that Trump doesn't have gallons of lung-blood on his hands, he surely does, it's that there's no reason to think that Biden doesn't have even more, and a strong argument to be made that Biden is even more responsible for the blood that drips from his own ghoulish claws.