It is terrible, but what is the alternative to prevent cheating? I had quite a few on-line exams by now and I've seen very creative attempts at cheating so far.
Design better tests. If you can "cheat" on a test by just googling things/looking at notes then the test isn't testing anything but rote memorization anyway.
1. If you need to lookup stuff in your waste of material you won‘t be able to finish everything. The time constraint was very hard. 2. It was not just repeating former things, you had to have understood them. Everything was a transfer knowledge exercise.