Because I don't know if a newer version might be worth having! Why does anyone update Windows when they don't know if an update might make their computer function better, be more secure or improve resilience against malware?
WinRE.wim is updated to latest version when Windows versions update. The build for WinRE.wim may not be the same as the Windows build as Windows only updates WinRE.wim as required.
It has worked this way for many years. In other words, there is no need to worry if you have the latest version.
The only times you may end up with an older version is if you manually copied an older version or Windows 11 updates somehow glitched, not updating WinRE.wim.
Regarding updates, one thing is 100% sure, if you do not update, then any known security holes will not be fixed.
Of course, there is a small chance an upgrade does introduce a new issue, but then it will (hopefully) be fixed on the next update.
It is pointless using logic "I am not going to update as that may cause me issues".
The best approach is to make an image backup, update, knowing you can revert
IF you get issues.
A lot of people wait until an update has been out for a while before updating, but this is a rather falacious argument, as you do not get protection benefit of any bugs fixed by new update.
Also bugs affect people differently anyway, so you can never tell if you will be affected by a bug until you update. Again the image backup approach is the best approach.
Can't imagine anyone being stupid enough to download a WinRE image from a third party though.
