No, no no NO! (Caution: Long answer below)

While I encourage people to take a look at Linux, you cannot expect people to just jump cold turkey from Windows 7 to Linux using KDE Plasma. Businesses have software tied to Windows, People will not understand how to do thing the “Linux” way, and making people think Linux is just like Windows will just turn them off more to Linux when they find they can't do things the “Windows” way.

Making the theme for Plasma to look like Windows 7 to make people feel Linux is just like Windows is completely a bad idea. It took me a while to understand how to do thing the “Linux” way (EG: don't run everything in root). I multi-booted between Windows XP and Kubuntu 8.04 for quite some time before I was ready to totally ditch Windows.

Also, people are not “resisting” the move to Windows 10 (rather not understanding why they should update), most people have no clue that Linux even exist, let along know what an OS is. People just buy a computer with Windows on it, and will use it without knowing it was something that was pre-installed. To them, it’s just like a television, it just runs whatever the way it wants to run. They will also not learn how to download an ISO, and write it to a thumbdrive, let along understand what a distro is. Failing to understand that, show the lack of understanding that people are not all power users. It’s like asking a person who drives a car to pilot a rocket, or asking a coal miner to simply learn to code… Yeah, I went there. :3

I put Linux on my mother’s laptop (was Windows 7, and did it not want to update), not because I’m trying to “convert” her, but because that’s what I support. If something goes wrong with the Windows install, I can’t do anything other than reinstall it. Windows XP was the last system I supported, and my previous attempt on fixing a Windows 7 system went sour. Also, I made the desktop environment function nothing like Windows, simply because she already had trouble using the touch pad, and does not understand the concept of “double clicking”. I made the desktop environment as simple as possible to use (XFCE by the way in case someone is wondering).

I also teach people how to use computers, some of which never touched a computer before. Some computers have Windows 7, some have 8, and some were XP 32-bit, which I was given the go-ahead to install Linux at my discretion. (BTW, don’t ask, I will not answer why.) I attempted to make it run like Windows 7, which gets pretty close. But when they load up LibreOffice, the file picker is totally different (EG: the box to enter the filename is on the top rather in the bottom, poor flow IMHO). Thankfully, I don’t have them explore too much, which would show more of an inconsistent UI between systems.

Instead, my advice is to advertise Linux (or Linux with the Plasma desktop environment in this case) as an alternative OS, and educate the public on what Linux is. To try to trick the public on something you cannot provide, will just bite you in the ass in the end.