What, you want to watch over my shoulder and I can show you how it garbles up styles? I mean this isn't some kind of random FUD, this is I CAN FUCKING SHOW YOU LETTER BY FRIGGING LETTER. Now, MOST people probably don't try to actually layout pages, they just type and whatever it looks like they're happy with, and if they can drop in a page number, a bullet list, and a few headings here and there they don't probably even notice when they're fucked up.
I have a 200-something page project that uses a master document, etc. Its not THAT complicated, the styles are actually just the basic ones with 3 levels of heading. It does have a fair amount of tables, and tables that need to be placed in frames (because bare tables just sit splat in the middle of the page, you can't do much with them). Once you get into this stuff, its VERY VERY flaky. Its POSSIBLE to build a document like this in LO, but at this point its up to a level where up to 30-50% of the effort is actually just beating the thing back into submission when suddenly whole pages of content just stops showing up in the UI!
I REGULARLY have to go in and delete and simply retype entire paragraphs because mysteriously LO decides that even though they're marked as say 'text body' that it has merged them in some logical fashion with one of the surrounding headings and suddenly the whole paragraph shows up in the TOC. That kind of crap happens just on a constant basis. Sometimes you can just cut and paste and rearrange and fiddle and faddle for 10 minutes and it fixes itself, many times you cannot, and have to simply reenter content.
I could go on and on and on. There's lots and lots of little glitches with tables and frames where they'll just suddenly bork themselves even when you haven't touched them at all, or all of a sudden LO will turn ALL the text in every table in your document bold, and you can't undo it. Again, just constant stuff. No one bug is overwhelming by itself and eventually you start to learn to navigate around most of them, but I can literally show 'em all off, so saying its bullshit will get you nowhere, you're simply WRONG and don't know what your talking about!