All things considered, with a six digit passcode and “erase all data...after 10 failed attempts” turned on, you reduce the likelihood of someone breaking in to the point of having no need to worry. I agree with the article in that iOS11 has taken a position of convenience over security (compared to previous iOS releases), it’s assuming someone gains your passcode. That’s a pretty big assumption.
And the feds have the million dollar bypass rig or access to third-parties that provide services, which probably supports 4-6 digits. 8-10 might be a better idea.
This got posted yesterday and got ignored. I don't fully understand why. Unless I'm totally misunderstanding, this is a really big deal. Compromise of any iDevice I own can result in the total compromise of my Apple ID, and potentially bricking all of my other iDevices in the process! Whaaaaaat is going on!?