These changes are, in case it wasn't obvious, extremely not good.
I'm guessing that whoever authorized these changes has never actually used public transit? Or perhaps never relied on it.
This may come as a huge shock to the people at Google, but a very large percentage of those who use public transit do so not because it is convenient or nice, because it is often neither, but because they are poor. And they can't just be whipping out their wallets to hire an Uber or a Lyft.
Furthermore, because this is America, an unfortunate lot of people stuck being poor wound up that way because they are disabled, and it matters a lot to them how long it takes to walk from a bus stop to a destination. Heretofore, Google Maps was a tool that allowed such people to find out what the walk would be between a public transit stop and their ultimate destination.