I rode it a lot from 2011 to 2019, and still do though less frequently. I don't presonally feel things were ever as bac as point like to claim they were, and I'm not really sure what's been "improved" so much.
The biggest changes are that you can pay with tap to pay everywhere, which is nice, and the trains drive a lot more cautiously, which irritates me because they feel considerably slower now.
I can live with slow but consistent versus faster sometimes and late or even unavailable at other times. For a while there the Green Line only made sense for students who valued saving a few bucks at the expense of an unknown amount of time.
