On the contrary
Questions like this only assess how much time someone has spent reading interview preparation materials. Let's face it: the lightbulb problem is easy once you have specifically prepared for this type of question but if it were encountered completely out of the blue and unexpected, something like 1% of the population would be able to correctly solve it (with no hint and no preparation).
If this 1% of top analytical thinkers is the group you are trying to hire, be sure you are among the top 1% of companies since these candidates can afford to be picky about where they work. Once thing for sure, they don't want to work in a bank's IT department.
