Linux

Yes, some minor formatting changes occur when opening a docx file in libreoffice. Hardly sounds like a deal breaker to me. And yes, you do get a pop-up when saving to docx in libreoffice (with the toggle to disable the pop-ups right there in the message). Microsoft office does the exact same thing when saving to an odt file though:

Once again, if you have to collaborate with office-users (and you cannot deal with the horror of having a different amount of space between the items), just use office online. How many times do I have to repeat myself?

Let me guess you’re someone who works in IT and never had a typical “office job” that includes spending 90% of your time writing reports and pushing spreadsheets around.

1. No, I do not work in IT, nor do I aspire to work in IT. I'm just a regular PC-user, who just so happens to have other opinions than you do. HOW DARE I?!?
2. Wouldn't IT-workers of all people know what the more optimized editors are?

This is why you don’t get it, you’re not the typical user of MS Office and you don’t share the same use cases the OP, the article author and myself share.

1. The article you shared was talking about gaming, the adobe creative suite, virtual machines, electrical engineers, labs, architects and sysadmins/developers. Please don't try to claim that the article author and OP ever had "the same use cases".
2. I guess you are finally correct though, I'm indeed not the typical user of MS Office (thank god). The typical user pays $70 a year just to edit word docs, while calling the family tech support each time they try to add a horizontal page in word. If your use case is being trapped into a proprietary office solution, where you have to provide a reason before microsoft allows you to shut down your onedrive, where all your documents are saved in a mythical "cloud", then I am glad that our use-cases differ.
3. I hope you see the irony of you using markdown in a comment describing why I am "out of touch" for using markdown.

If you want to use windows, that's fine. But please don't share such blatantly ignorant articles, and don't try to defend them when multiple people point out why it is wrong about so many things.

I probably won't reply to your next reaction (should there be any) unless you come up with some actual arguments, instead of "the line spacing is broken, you're out of touch, not me".