I saw this the other day.  I was unimpressed.

There's a lot to this writer's editorial. 

https://www.neowin.net/editorials/my-windows-10-pc-has-finally-been-offered-windows-11-but-im-not-sure-i-want-to-update/

Would not be surprised if Microsoft does not get in trouble for that software dark pattern. Luckily I wont have to worry about that on my plex machine. My outdated CPU/Motherboard not having TPM module pretty much locks t to windows 10 only. On windows 11 on my main machine but had done so way back then when win11 was first available test.

Actually, one sure way to prevent that ad from appearing is by disabling the TPM if it fulfills MS's requirement for W11. I don't recommend doing that since it could break other stuff.

I wont have to worry about that. My motherboard for some odd reason even though its fairly new did not include a tmp module in it. I checked all around the bios for a setting. Nothing exist for it. Im sure it probably has a port to plug one in, but its not worth doing so since need the system on 24-7 since its a server. It being on windows 10 will be nice for quite some time. No interruptions to its service.

Just use Rufus and there is no need for the TPM Module, Ram and chip requirements to install Win 11. If You can run Win 10 well, then it will run Win 11 in the same way. Rufus removes the need for those Hardware Requirements at the point of adding the OS to the USB Stick. I have ran my PC now since Win 11 was launched, MS said i did not meet the requirements for Win 11, i thought differently, so used Rufus and all has been very well, no issues, no problems.

The point of the reply was how to avoid the MS ad to install W11 altogether.

MS are sneaky little Blighters Doc, our peeps need to know MS can not have it all there own way, no matter what they try, TPM modules mentioned, so i shared the wisdom, use Rufus and it does not matter, no nags or adds, too may peeps still unaware of this, better a few lines saying it than peeps throwing away good Hardware, and why, just because MS Says. Almost every single bad move MS has made gets put right by savvy members, this trick of there's will too, its the way of things, can not see that changing any time soon.

Plus ça change, plus c'est la même chose.

If only that was the case for MS hey Doc, does seem to apply better to those who reverse Bad additions from MS.