Andy Young, an ex-Microsoft senior software engineer, posted a message on X/Twitter bemoaning that even with his $1,600 Core i9 CPU and 128 GB of RAM, Windows...
Windows 11 exists for the sole purpose of requiring tpm 2.0 in order to boost new PC sales. 10+ year old hardware worked perfectly fine running win 10 and PC manufacturers were steadily losing sales as there was little or no need for organizations to replace what they had. The decision to make that requirement will result in millions of PCs going in the trash.
You can, but MS disables automatic updates without telling you. I have TPM but my CPU is one generation too old apparently, so they silently disabled updates on my machine and I didn't realise I was still on 21H2 until a couple of weeks ago and had to manually update it.
The manual update worked and it didn't warn me about anything or encounter any issues, but that was a massive pain.
My cpu is also to old (5960x) but I get automatic updates. There are/were multiple methods to getting windows 11 to work on invalid hardware, maybe some don't work with auto updates.
This is probably hardware-specific, but I installed void linux on my thinkpad x1 last week, and it can't shutdown or wake up from sleep until I disabled tpm 2.0 from bios. Very weird. Other distros I tried so far didn't have this problem.