if it was pure theater my friends and family who pay for all their streaming services would be able to share the content without permission from Netflix, Hulu, etc. That this is not the case disproves your claim that it’s pure theater. It does exactly what it aims to do and that’s raising the barrier to entry for piracy.
First I’ve heard of browseraudit, thanks for sharing!
EDIT: For comparison I got the same scores on Firefox (duh) and the following on Edge.
Score :
Bonus! Browserbench.org speedometer 3.0 scores: