Inflation can be pretty complicated. It could be argued that if there’s both mineral inflation and isk inflation, that things are still in balance and it’s okay. Or that it’s not the total amount of isk, but market transactions that signals inflation. Regardless, inflation is happening, but as long as inflation remains at a controlled rate rather than wild inflation, it can be considered a good thing as it creates room for more people to take part in an economy.
In that second chart, it’s talking about import/export values. Not isk itself, just items moved in and out (and through). Dark parts are the difference between the red and the blue, showing if they are net importers or exporters.
edit: you’ll notice on the sink/faucet graph that there’s no entry for “mining.” That’s because mining does not create isk out of thin air, it creates minerals, which can be exchanged for isk. If they could be exchanged with NPCs then it would be a faucet because the isk would be coming out of thin air, but they can’t, so they aren’t. Just because someone’s personal wallet goes up, doesn’t mean it’s a faucet, and that’s where people seem to get hung up on the concept.