Bethesda games have a reputation of being a little buggy. It is very hard to avoid though in open games like this. They try and fix them if they find them. Some bigger bugs was backwards flying dragons and flying cabbages that could kill you

Still, they've been fixed. You are right in one aspect this game has some weak areas were mods cover up, but it is not broken i think. The reasons you mentioned matters little to me, actual gameplay is more important.