to me it seems you did represent facts, although I am not sure I would see the
click-to-see attribution on small screens a violation of copyright, I agree it
is suspicious that there is space for a mapbox logo but not for an OSM
attribution.
Cheers, Martin
Note that in this I focus specifically on Mapbox, but they are not
unique in repeatedly "forgetting" to properly attribute OSM while
prominently featuring their own logo.
For start I would be thankful for fact check - are facts that I listed
below actually facts or are hilarious misrepresentation