Honestly, for growing places, or places with bad public transit, diesel busses are the way to go. They are the cheapest and require almost no new infrastructure so it can offset car emissions quicker than the other options. Established bus routes that are popular should be converted to tram lines or BRT.
Reddit has always had changes that made people want to leave. Removing CSS was the first that comes to mind. Now that lemmy exists it could be seen as a new platform to jump to every time reddit does something dumb or anti user. I have high hopes for lemmy