It does the same with much more overhead for the user as far as I can tell. The point of Brave is to have everything working behind the scene for the user, so no friction.

What's the "much more overhead"? As far as I know, in the current state of Brave you have to buy tokens, just like you put money in flattr. In the future model, Brave will show you ads vs flattr taking money directly - is that much more overhead?

(The implementations might differ in other important things, e.g. privacy or fee structure, but the basic user attention model seems similar enough to me)

Flattr _used_ to require the user to click a button to indicate they like a particular page and want to support its creator. I assume GP is simply unaware that that's not how Flattr works anymore.

Flattr 2.0 works more like Brave does; the user pays a monthly subscription, and Flattr just automatically distributes those funds to creators based on what sites the user views most often that month.

I stand corrected, I didn't know about this new version.

I don't think Flattr will succeed over cryptocurrencies such as BAT/STEEM.

And in another bonus doesn't appear to require tokens.