It seems to be the modern way, and normal on mobile apps, and I can't stand it. Why would I want the computer to save what I wrote without asking? I like being asked. I dislike computers trying to be clever.
I had to complete a resiliency test on our infrastructure and submit it to auditors for compliance reasons. I ran the tests, got the results, and I have to put it into a report. The report is like 30 pages long or more, but very little changes between each test (we do them quarterly). So I only usually change a few tables with the new report results, and freeflow some commentary in the discussion section that is unique for that run, so that the auditor feels special.
Anyway, I open up the previous quarter's report. I edit a bunch of data, write a bunch of useless commentary and go to "Save As" with the Q1-2024 suffix, and I realize the Word document had been autosaving my work the whole time on top of the Q4-2023 report. Urgh, very annoying. I didn't save intentionally because I knew I would save a copy later.
I was able to restore the old version through revision history, but still annoying nonetheless.
I'm inclined to agree with Microsoft Word's autosave, here. If you are making edits to a file, the implication (which could be wrong) is you're intending to overwrite at the end. And indeed, autosave came around because way too many people were losing document modifications to freak power outages and computer crashes.
If the intent is to not overwrite an existing file, I personally learned to make a copy first either via Save As in the program or by copying in whatever file manager I'm using. That way I make my intention clear to both myself and the computer.
I've actually burned myself numerous times because occasionally I would forget to copy first, instinctively hit CTRL+S frequently because I hail from before autosaving became widespread, and then realize I just overwrote something I wanted to keep as-is.
As I read it, the GP complains about Word auto-saving on top of the OG document. I think intermediate changes should go to an auto-save buffer until you tell the editor to save over the top. For that reason I'm inclined to agree with the GP. Word's behaviour is wrong and the process you describe sounds like a workaround.
Office's auto save feature only works on OneDrive and SharePoint Online, which means every change is versioned. There is no 'overwriting' the OG document. The OP can go back in the history and recover it.
That's really annoying, but not quite the same as what Notepad++ (and presumably others) do.
Notepad++ just saves a cached version of the file without touching the original until you explicitly hit "Save". If you close the file in Notepad++ (not exit Notepad++, but tell Notepad++ to close the file thus deleting the cache), it will ask whether you want to save your work.
And if you misclick? Or there's a power outage? Or crash? Guardrails are nice and since I usually want to save what I've entered I appreciate it being the default behavior. Or in other words, I asked.
To address another commenter's point about word overwriting: auto saves should only go into a temp/separate file so as to never supersede manual saves.