Both of these note that you should pick different options under different rules (each says Double if allowed, otherwise hit for certain combos, etc) so that doesn’t explain why their chart would be wrong.
it even looks like a mix of h17 and s17 charts
They state on that page that it’s meant for H17. So either their chart is wrong or they are giving wrong information on which rules to use it for.
plus all of the changes are really just marginal decisions
Everything is a marginal change in blackjack. The margins are super slim which is why they constantly stress that you need perfect play so its surprising that they would let something so egregious as messing up basic strategy slip.