Does the change provide any new insight on progress being made in Lake Erie?

NOAA’s updated time series shows a decline in bloom severity since 2019. This is consistent with the Annex 4 Adaptive Management Task Team’s assessment that lake conditions appear to no longer be getting worse. See: 5-Year Binational Adaptive Management Evaluation for Lake Erie (2017-2021): Measuring the Ecosystem Response to Nutrients. Note that the mild blooms observed in recent years are likely due to a combination of factors, and the timeframe for these analyses is relatively short.