I'm a software guy who for 1.5 years worked for a hardware company with a relatively strict upwards-only information reporting structure. It wasn't even for secrecy, it's just that they didn't understand the concept of collaboration at all.
Never again. Went back to the more sane software world after that experience.
It felt quite soul-crushing after a busy week to have to spend mental efforts writing up a report every week to someone two levels up... especially if you have no idea if it was ever read. If colleagues could consume and learn from this effort it would make a lot more sense.
There are ways to test that.
You could just not submit the report, and see if anybody complains.
Or prepare the report, but intentionally corrupt the file before submitting it, and see if anybody complains.
Or prepare the report, and in it ask if anyone is actually reading it, and ask that they contact you if they are.
I admit I never had the guts to submit a slide which asked if anyone was reading it. It did cross my mind.
(It was a Microsoft-by-default-company, as many small hardware/research-oriented companies often are, I guess.
There was also that one week epic fight needed to get approval to run MacOS/Linux in the new "software department".)