Hi 
On the contrary. MS do not fix their problems quickly at all. Even known malware threats remain for months and even years. Their strategy is to blame the users. A typical one being to tell users they shouldn't be using macros because of the likelihood of getting an infected or corrupted one. Read "The Emperor’s New Clothes". People are told that MS Office is the best and so when they find problems with it they tend to blame themselves rather than the software.
For example when using non-MS software someone would quite happily slate the product with this sort of thing "I opened my document and deleted tons of stuff and saved it using the same name. now when i open the document it has all that stuff missing! The stupid program can't even find the stuff that i deleted. No, of course i don't have a back-up of the file before my deletions"
One problem that has never been solved is that when creating an MS document the style keeps randomly changing without the user doing anything noticeable. So, the language keeps switching to US. Bullet-points and numbering styles keep changing. So in a bulleted list the points keep changing shape, size and amount they are indented by. Numbered lists may well miss a few numbers or repeat a few or suddenly change from i), ii) to c), d) or other weirdness.
People have learned to accept all this shoddiness from Word because it happens to so many people. Really advanced users have learned to re-impose formatting after completing a document or just accept it.
Spelling has gone out the window not just because of the MTV generation but also because MS's spell-checker keeps switching languages back into American (US) so things that are correct are sometimes given a red-wriggle and sometimes blatantly incorrect spellings are not found.
LibreOffice tends to stick to the same style throughout, unless the user has deliberately changed styles and is aware of having done so. So, bullet-points line-up and retain the same size. Likewise with numbered lists.
Another problem is the way Word can't handle images with much sophistication. MS produce a different product for people to buy. Publisher. Most of the functionality of publisher wouldn't be needed if Word wasn't such a Pos. Writer handles most things that Publisher does with more elegance and sophistication.
Another problem is the limited choices when exporting to Pdf. I often get posters and stuff from Word users that probably looked quite good at their end but the jpg compression has made a mad swirly mess of it. LibreOffice allows you to set the type of compression and even allows people to create uncompressed Pdfs. Pdfs can be created with various levels of integration with screen-readers for blind-users. MS Word has limited options.
So, LO already is a far better product in many, many ways but people have learned to accept problems with MS stuff and are even happy when their machine is heavily infected with malware that results from using MS junk.
Just my opinion and doubtless many people, especially the BoD disagree.
Regards from
Tom 