Have you ever voted before? Assume 10 questions per company. Exposure to S&P 500 would mean 5,000 questions to answer. I don't know what the general stats are, but some proxies I've seen have 20+ questions.

Now, you will most likely be uninformed about most of the decisions that need to be made, which lead to your 2nd point about default options suggested by the index fund manager. But that just circles back to Bogle's points in the article. Also, with index fund costs at rock bottoms, good luck getting quality research into your voting options.