I thought Sysinternals was acquired by Microsoft?
MS sucked in the tools/pages onto its domain. Navigation to/of their pages and versions became somewhat shittier (per the... "canonical" MS web experience, I guess). I seem to recall a bit of public pushback on this point, and things improved somewhat. Maybe I mis-recollect; I've been mostly away from Windows for quite a number of years, now.
In his spare time he's also managed to write three novels.
By keeping them out-of-band, that support requirement doesn't apply, allowing the tools to be much more aggressively updated and released without the same degree of oversight. There's a reason they're licensed separately and effectively with no support or warranty. Doing so enables their rapid development without/less-of the usual bureaucracy.
Still comes in handy to track down some specific types of bugs.