This question (or a version thereof) came up at BGO training a few years ago. As I recall, we were told that students should take classes at an AP level because they believe they can succeed at this advanced level, not just to take them. IOW, if you're great at English, AP English is for you. Conversely, if you're not great at chemistry, you probably shouldn't take AP chem.
It doesn't help a student to take all AP courses and get mostly Bs and maybe a C. Bottom line is that students need to think about AP courses and take them strategically. Obviously, if you can handle 5 AP courses and get As, good on you. But if you can't, taking 1, 2 or 3 in courses where you expect to excel is smarter than taking 5 Apps and doing miserably. It's a balance between challenging yourself and setting your self up for failure. Each person is different, so the decision will be different,