Zcash does have a 20% dev fee for the first 4 years of mining. When the block reward is halved then there will be no dev fee. The devs will be rewarded 2.1 million zcash. Which is 10% of the total supply that there will ever be.
https://z.cash/blog/funding.htmlYes, which means that information in OP is fake and misleading.
You can't call it "fake". It's just misleading. I guess it depends on how you look at it. It is accurate when compared to the other coins. The info-graphic refers to percentage of block rewards, not total disbursement amount. If all a person cares about is how much ZCash is taking right NOW, then it's 100% true. In the long run, it it less. But to criticize something that pedantic is unnecessary on your part, because there is no false information given. All advertising campaigns intentionally make the content appear to better the topic in question. That's just how it works. No shame there.