This is discussed here all the time, but I'm not sure I believe this. Why would Bob care about reducing crowds?
Almost all of the issues described here as negatively impacting the guest experience can be traced back to having too many people in the park.
Long lines, poor interactions, lack of experiences, lack of communication and all the way down to pushing out badly made food... Can all be traced to trying to serve too many people.
It the guests keep telling Disney they want cheap prices and easy access.
Disney can't provide both, the cheap and easy access and the quality guest experience. So what we see is the compromise between the two that tends to make everyone unhappy to some degree, but that most end up accepting.
Disney knows though that people are willing to pay more for a better experience, and they have reiterated, even in the last call on Wednesday, that people spend more when there are less people in the park. Whether that's more food sales or merch sales or even more visits... Doesn't really matter because it's working for them.
The less people that are in the parks means less cupcakes and t-shirts to sell. Bob is absolutely not concerned one tiny bit if the park is too crowded. Being too crowded apparently isn't keeping enough people away (that's a brain twister if you think about it) to reduce profitability. Again, Bob isn't focused on your experience .... he is focused on your wallet.
This would kind of make sense if Bob wasn't the one who initially approved spending millions reconfiguring walkways and crowded spaces at Disneyland.
They have to spend money just to make the place feel comfortable, money they don't really get a return on. The easier answer would be to just raise prices until the crowds subside. There seems to be though, a greater importance on public perception of a availability than the actual availability itself. Hence the park passes.