In the first month of congestion pricing, the MTA reported over 1 million fewer vehicle entries into the toll zone than would be expected without the program, driving the significant traffic reduction seen above. It’s also worth noting that the above chart shows reduction in travel times rather than congestion—in many cases, congestion has completely disappeared, and the new travel times represent a congestion-free trip. This reduction reverses a years-long trend of rising traffic into Manhattan - congestion pricing took a worsening gridlock problem and solved a significant portion of it overnight. Additionally, while there were fears that congestion pricing would just re-route traffic to other boroughs, the data from the first months of congestion pricing suggests that traffic has not increased elsewhere in the city.
Transit ridership has seen a notable spike since the implementation of congestion pricing as travelers into Manhattan are switching from driving to transit.
The MTA as a whole is averaging 448K more public transit riders per day this year. To put this into perspective, the second-highest ridership subway in the US is the DC Metro, which averaged 304K riders per day in January this year. The MTA ridership growth since congestion pricing went into effect is almost 50% larger than the total ridership of America’s next-largest subway system.
Unsurprisingly, bus ridership has seen the greatest relative growth, likely due to the fact that it most immediately benefits from congestion pricing thanks to faster travel times.
That's in line with what I was saying - that most people's takes on congestion pricing (and honestly all other policy) is just vibes. I'd hope that stats and facts would sway them, but I've met people. But then again you cite there a large change towards supporting it as evidence builds, so maybe there's hope.