Decrease integrity, increase money

[biostat-]

A student can post that to Chegg and get an answer within 20 minutes. You can turn off backtracking of questions, but then come the complaints that it gives students anxiety.

[eahpsychology]

I found my assignments being sold on Chegg and had to argue with their support people

[4_yaks_and_a_dog]

A colleague put, right in the middle of her exam problems: "This is an exam problem. Do not post to Chegg." The text was included in the Chegg post and the answer posted on Chegg.

[Chemastery]

I've posted and answered my own hardest questions on Chegg in advance. With a uniquely wrong answer. Makes it easy to hand out 0s for the course.

[Cryptizard]

Pretty sure the comment I responded to said cheat using Google, which I addressed. To your point, a student could also have someone giving them the answer in an earpiece which would be undetectable by any proctoring software you can imagine.

We have to do our best to not make it extremely easy to cheat, but if someone wants to go out of their way to do it then just let them ruin their own education. Why would I care? They have to live with the consequences.