Are other mods noticing reduced use of reporting by users?

I actively moderate 4 subs, and I've noticed that all 4 of them have substantially reduced user report activity over the last several months to year, or so.

This sucks, because the community notifying us of offensive or objectionable content really helps. Sub members usually encounter bad content much faster than the mods can, and we can't be expected to be on top of every post and comment immediately.

I primarily use new desktop. Has something changed lately with the mobile app that makes reporting less obvious, harder, or otherwise less likely for users to do?