If the argument that people who use Word that don't really know how to use it can end up using it inefficient ways, then doesn't it even more apply to Latex. I could probably come up with an anecdote about someone who tried to use Latex but spent hours trying to figure out how to get the format they wanted and got frustrating trying to debug their scripts.
If we want to compare tools, we should not compare expert users of one tool with novices of another tool.