That's exactly what happened to me when I was desperately trying to save battery and turn off services.
I'll admit that this behavior is what I want 99% of the time, so it also doesn't bother me.
I do think the new behavior is better for me as a user 99% of the time, but at the same time i also want to know what is happening and how to override it.
Silent mode on android shows how to do it correctly, there you get a popup when activating it asking for how long you want it to be silent. It has a few presets so you just need one extra tap. That is the correct behaviour, if that's to much for an Apple mind to handle, the very least they should do is to inform of the actual state with a more descriptive label.
I like this change because when I turn just wifi off it was always because of an acting up network. Now that I don't have to remember to turn it back on is a good thing. My guess is that Apple has a lot of data, and found that this behavior is what most people want.