I only really trust WinUtil as it has the most eyes on it, and Chris has a very clear cut focus on what the script should do. It shouldn't be trying to gut everything out nilly-willy, it should only bring your system to a sane baseline without breaking anything. That's what it does and it's very good at it, practically zero breakage from trying to rip out more crap than it should. And I like that, it's not like Tiny11 or some other "debloater" that's so hamfisted you end up with a half-broken install because the maintainer has decided that Windows Update or Windows Defender is "le bloat" and went out of his way with dirty methods to gut it out, breaking half of your OS. Too often people are hyperreactive towards Windows not being as good as it used to be. Every time you have fear mongering headlines about how bad Windows is, overblowing the scale of how bad it actually is, and then people get so scared of Windows being "bloated" and being "spyware" that they want to overcorrect by removing as much bloat as possible.
It also has MicroWin which aims to take a stock Win11 ISO and apply all those sanity guts directly to it so that the very moment you install Windows you start off on a nice, clean base akin to how Windows 7 used to be post-install. I think by this point most of it's issues have been alleviated so the ISO's it produces are solid. Oh yeah, and most importantly the Windows Update policy toggle so that it applies group policies that tell Windows to delay feature updates by the maximum allowed period of 2 years and security updates by 4 days. Meaning that if you're running Pro 24H2 you'll be delaying the jump to 25H2 for 2 years since those major version jumps like to break shit, and delays security updates by just enough to give a little buffer to any bad updates that may come up.
Recently Chris did a video giving a highlight to some other projects, and one of those was CrapFixer. It's stylized to look like CCleaner and applies a bunch of neat QoL registry tweaks, so it's worth checking out as well.
The reality check on Windows debloaters is this: the vast majority of "bloat" isn't the crap that's running in the background that's slowing your system down, it's either the large amount of dependencies in the Windows installation folder that's meant to ensure your system "just werks" or it's UI/UX annoyances from Microsoft. Most of the pre-installed bloat programs are just disk space wasters and that's about it. But don't expect to trim down Windows to be like 5GB and not have any issues with it. It's not Linux, it's not designed to be modular, and if you use Linux for longer you will bloat it up the more software you install so just don't bother. It also doesn't matter if your Windows folder is 40GB when you have it on a 1TB NVMe SSD. It's 2025, bulk storage is cheap.
As for spyware? Windows 10 back in 2015 introduced the entire telemetry framework that people cried about back then, yet eventually everyone moved to 10 and had no issues with Microsoft constantly collecting data on them. Then Windows 11 came around and suddenly, a moral panic! Windows Recall! Microsoft will spy on you! The exact same talking points that were thrown around back in 2015 and no one thinking logically that Microsoft has been spying on you for years, but you just got used to it due to it being out of the news cycle. The moment something pops up in the news cycle, that's when you suddenly care. If you truly cared, you would've realized that this telemetry has been in 10, cannot be disabled or removed and moved to Linux already, compromises be damned. But you didn't, because you don't actually care. You only care because the media cycle tells you to.