Is OneDrive for Linux Mature Enough Yet?

I'm looking to see if anyone can speak to how life is (good, bad, or meh) with using one of the popular OneDrive clients on a common enough Linux distribution.

Ok, so allow me to set the context...

• My partner uses Windows laptop, and with next year's end of life on Win10, I need to make decision to advise them on whether we get them another Windows laptop (presumably running Win11), or finally get them to take the plunge on using Linux - (a laptop running some common enough linux distro).
• I run linux as my personal daily driver on my laptop for more than a decade, and on server side having been using and dabbling with linux since about 2004. So, i will add also that i'm all bought in on the linux, libre/free and open source lifestyle.
• I'm not a fan of Windows, but not judging that others like my partner use it. By the way, my partner doesn't care about tech nor computing, they simply use applications and move on with their life. (Yes, i have politely nudged them over the years to try linux, but they have been hesitant to do so without a true need, so why rock the love boat, right?)
• My partner's computing needs are quite basic, but slightly tricky...Here is what i mean:
  • They use a web browser or mobile apps for the vast majority of their compouting/app needs
  • For office suite, they use desktop versions of MS Word and Excel
  • Quite importanrtly, they use OneDrive to sync their files (and there are alot important files for them and our family)

So, from a computing needs perspective, that's pretty much it. For every other function and need (e.g. email, productivity, etc.), they simply use browser or mobile apps as noted above.

You might be thinking, well, move them to linux, and if they like Microsoft, then use the Word or Excel browser app, right? Well, they LOATH having to use the browser or mobile versions of Microsoft Office. Being of a certain age, they might be ok with LibreOffice, since it mimics close enough to desktop versions of Word, Excel desktop apps...So, I think the desktop and office suite are less of a problem to find an alternative if needed...
But, OneDrive, yeah, this is the one app that they won't let go. Not because they love Microsoft (they could careless about the company), but because they have a good trust and experience of its functions to date on Windows. Onedrive has really empowered their workflow. That is, because they jump from browser to mobile app often through their day, etc....the feature of having a file easily and reliably sync (via onedrive) between devices is probably the most important need that they have.

Now, before anyone says, well try "NextCloud"...yeah, been there and done that. Nextcloud works wonderfully for me (has for years)...but it does not conform exactly to my partner's workflow. I've tried Collabera, but could never get it to work reliably enough. I want to state again, i am a strong, emphatic open source advocate...But if my partner can't get their work done without me constantly diagnosing and fixing things....then its not proper solution for them.

So, while i have a solid linux or open source option for all of their other needs, Onedrive is the challenge here. So, can anyone advise, how things are with onedrive clients on linux? Any particular client that is worth me looking into? What about a specific linux distro that, maybe possibly works best with a particular onedrive linux client? I should add that my partner is willing to pay for file synching and does NOT want to have me self-host things for this single function since they don't want to have me kill myself in supporting it. So, if there is a valid alternative to onedrive that is awesome on linux, and that they can pay a company to reliably host, that is welcome as well.

Or, should i simply advise them to stick to Windows through EOL, get them set on Win11 along with native Onedrive, and move on with our lives?

I'm thankful for anyone's recommendations and advice. Cheers!