As the wikipedia article stats, the idea was proposed first by Christians rather than skeptics, arguing that it's a weak form of faith, so you're definitely right on that point.

> Whether the God of the Gaps points you towards atheism or theism depends on your concept of the unknown

I really like this assessment. Looking at the sibling comments here, most seem to think all questions will be answered eventually, but I suppose that's impossible to know, since we don't even know what all the questions are yet.