It's very clear that regardless of what resolution was put forward that the
intent of the shareholder bloc supporting it is to reduce global carbon emissions from fossil fuel companies.
The first two directions (of many possibilities) go toward that end and would likely be supported by that shareholder block if put forward.
The last would put resources toward the reduction of per capita fossil fuel production, and use the resource of a fossil fuel extractor to do so.
> Why would this be an effective strategy to get more public transportation built?
Because, if carried forward, it achieves the desired end goal and uses the resources of a problematic company to do so.
For an activist block that wants change in energy creation it makes a great deal more sense to change bad behaviour than to leave that in play and invest elsewhere.
If you can imagine the mindset of activist investors you'll be able to answer these questions for yourself as you pose them - it's a useful technique to work on.