Hey dude, it's a really nice visualization website done by a high school kid. Don't kill the buzz.
But now that you've diverted the topic, let me tell you that you're full of BS. stuffin.space doesn't show it, but space debris is a serious problem. stuffin.space shows the largest satellites, upper stages and debris chunks, but there are billions more pieces of debris that are too small to show on a website, but large enough to cause serious damage.
It really doesn't take much to damage a spacecraft. I have some experience with this: I've worked with two different spacecraft that experienced "micrometeoroid" hits that damaged sensitive equipment. But really, in low earth orbit, micrometeoroid means human-made debris. There are plenty of flecks of paint and fragments of silicon that can slice through delicate spacecraft apertures or pop a solar panel.
When we ran the numbers using NASA's best simulation of space debris at the time, we were horrified to find out the amount of 20-50 micron pieces of debris that had enough energy to puncture sensitive detector windows and films. And this simulation only had data from before the huge space collisions of the past decade, which have probably doubled or tripled the total debris load. In our plans for a new satellite project, a damaging hit by space debris was one of the serious factors limiting mission lifetime.
And no, most of the debris will not de-orbit. Yes, anything within 600 km or so altitude will likely be affected by atmospheric and solar drag and re-enter within our lifetimes, but there is a huge orbital phase space where debris will essentially be stuck there forever. NASA requires its missions to have a debris mitigation plan.
So, thanks for poo-pooing space debris. Some high school guy's website sure was a great soapbox for you to tear a straw man apart.