front page claims you should not trust at face value.
If something has an asterix *, read the sub point,
If it has a min/max tolerance you can be confident that under those exact stated conditions it will meet them
For the charts, read exactly under what conditions they are testing, in that exact use case you can generally trust it. outside of it your on your own short of contacting them.
Also sometimes they leave out gotcha's, like a random capacitor that appears on all there example circuits, but never mentioned in the rest of the datasheet, half the time its there for a good reason, the rest of the time someone was paranoid. IF you follow the example circuits under the same conditions you can expect the charts to be truthful.
Yes it is marketing, but If you bought a 2A 5V power supply brick and it didn't meet what the datasheet promised, would you personally ever use that company again?, same for if you got burnt by something they didnt document?, this drives them to be possibly misleading as all heck, but never an outright lie.