[Quoth]

I tested it out on my retired Nov 2016 Windows laptop running current Win 10 and used ethernet for Internet.
It works fine, (no glitches or artefacts) but pointless unless your laptop is smaller than 10" screen. Windows calls it a "Wireless Display", but I don't what that is. I guess your WiFi isn't fast enough or congested, because actual RDP is adaptive to suit the available speed.

My current laptop and desktop runs Linux. It has a thing called KDE connect that can work with Android and let you do SMS from PC if the device is a phone or has phone features.

I looked it up and it is indeed reverse Miracast. It needs a lot of bandwidth and processing and it GARBAGE compared to an HDMI cable.

Most TVs and Tablets I've tried are a nearly useless for Miracast compared with my ancient Sony Z1 running Android 4.1 which can play HD Video from SD card or WiFi to an HD TV via an HDMI cable with micro HDMI adaptor. I guess some projectors stupidly use Miracast from laptop, and an HDMI cable makes more sense.

Edit:
Both send and receive using direct Wifi is an option on Linux called "Gnome Network Displays". Really screencast/miracast is inferior to HDMI cables (or other screen sharing that uses regular networking as there is no control over it and it's peer to peer Wifi). A zero cost way to share a phone screen instead of a cabled HDMI connection. It's particularly pointless for a laptop to projector or TV compared to Display port or HDMI. Some systems have the equivalent of HDMI on USB-C and there are actual "USB Video Displays" for USB-A and USB-C.