Kernel extensions, system extensions, app/Finder/Safari extensions are all very different, as explained here.
KEXT
Invaluable tool for identifying and locating some problems, for troublesome updates, clearing caches and more.
From AppleKextExcludeList to XProtect Remediator, what’s where, its current version, and which have fallen into disuse.
Creating the external bootable SSD, downgrading security and allowing kexts, then trying to install a kext on an external drive which must be ejected.
Looking forward to the time when third-party kexts are finally banished from macOS, and replaced by modern system extensions, and their siblings.
According to macOS Help, safe mode stops some software from loading, and performs a check of the startup disk. Here’s a more detailed and accurate account of what it does.
From CompatibilityNotificationData to XProtect, details of all the security data and related components in Monterey.
Management of kernel extensions has changed significantly in Big Sur and later. This overview for users contrasts kexts with user-level extensions which are replacing them.
It would be much easier if the log contained entries detailing the loading of extensions. Instead, there are long gaps. This explores how you can use those in diagnosing problems.
In one of only 3 kernel extension on your Data volume is a list of blocked kernel extensions. What protection from old and broken KEXTs does it provide?