Does Low power mode work on unsupported Macs through spoofing?

I got low power mode to show up on my 2015 13 in MBP after trying to get universal control to work by spoofing to a more modern mac. Universal Control is still not working but I noticed that I have low power mode now. Does this mode actually work? Or is this something that is technically hardware limited (like the low power mode being a newer intel chipset requirement)?