[Quoth]

You don't need powershell to copy to MTP on Windows.
Most Kindles are not MTP.

Page indexes and thumbnails? History? Then Calibre.

Also few people will want to sync a kindle with local directory. Calibre is a better solution.

The builtin command line / console copy is simple or GUI file manager. More than that, the best tool is Calibre.

I have now looked at it on Github.
This github tool is not simple.
Unless you think rsync is simple.

The most useful platform for the MTP aspect might be MacOS, but I only see Windows and Linux. No Linux user needs it. It's of dubious value for Windows.

If you want more complex than copy (Windows) or cp (Linux), then Calibre is a far better solution. I manage multiple ereaders* and MTP devices and about 8500 titles (mostly PD). About 8 makes of eReader. Calibre doesn't work with the reMarkable (unless they have recently changed the FW), but does work with all Kindles

I can't recommend the sync2kindle tool.


[*Only Mass Storage Kindles as I won't be buying a Scribe or 2024 model]

Edit: I see this tool is only AMD64. The commands copy / cp / rsync are native. Calibre runs on MacOS, Windows, Linux and has AMD64 and ARM. Works on my 2G RAM Raspberry Pi (ARM). There are older versions for Calibre x86 32bit (XP, Win7, Linux etc) and some have newer ereaders backported to them. Calibre also supports "simple" command line opration.

Sync with a Kindle is of dubious value as any files via Whispernet from Amazon are likely no use on any other device or PC. The only copying from a Kindle (except Scribe) of any value is annotations, and if that is the main activity then a Kobo is better. A Kindle Scribe really needs Amazon "sync", as the sticky & "PDF" system is tricky & complex outside of the Amazon ecosystem.