It could be they are collecting and hiding the data, but what they publicly disclose they have certainly varies. My de-google-fication really started when I used google takeout (like the OP here). Excluding things I wanted backed up (e.g. photos), Google still had more than a GB of textual data (this was 7 years ago or so—my memory may be wrong). I use Apple a lot so I went to their “takeout” page. They had a few MB of data pretty much all of which I considered innocuous. I don’t think they are equivalent.
I do agree Facebook probably collects as much data as Google, but I gave that up long ago.