I've only installed Linux either by buying (shudder) a DVD or downloading an ISO and burning a DVD or USB stick and not once in the many systems I installed it on was there a *hiccup of any kind.
First off I suggest the OP take a deep breath.
For anyone new to Linux IMO on a desktop machine buying a .5 or 1TB drive (for some $35?) and saving your MS install as a Gold drive is wise.
As I said, having a DVD or USB stick works. After that it's a good idea to go in baby steps... get the OS functional with network, printers, external devices ONE AT A TIME and once your BASIC system is fully functional AND proven solid make a timeshift and / or clone your drive.
THEN and ONLY then diddle around with software manager software selections but do NOT BIG hammer it and install dozens of pieces of software at once. Take the time to evaluate your results and in the interim startup your gold MS drive to perform daily work functions.
I do not think huge markets like China and India can be validated for installed systems but I suspect there are many more millions of Linux users there than we think / assume are running Linux so saying:
"This OS is not ready for prime time" is patently wrong. I hope your back is feeling better and remember deep breaths help
* As with any computer there are ALWAYS going to be hardware compatibility problems and I have had some with video cards, USB WiFi adapters for example but these are ridiculously inexpensive nowadays and being able to go back to a "gold" drive while sorting out issues is a stress relieving tack to take until your commitment to leaving the MS family is complete, or not!
PS, I might add that using a DVD or USB stick I've also installed Mint on several mostly older laptop machines without issues and do NOT wipe your gold MS drive until you're certain Linux is going to stay.
Remember you installed Linux for a reason, do not lose sight of this fact.