[BoorishBears]

Their goal isn't to make it impossible, it's to reduce it. They want you to really need to drive, not just do it because it's convenient.

It seems you might not familiar the actual toll to start, it carves out a lot of special cases for that reason: people with certain incomes are exempt if they already live in the area, ride-shares have special rules, they excluded corridors around the edges of the city, etc.

You're also confused on cost here. It's not cost to the city they're trying to change with a toll (that'd be nonsensical) it's cost to the driver. If cost is hard for you to follow, think of it as "attractiveness".

They want driving to be unattractive, not impossible, not untenable... just unattractive.