Yes. The law doesn't bind directors to maximize shareholders value.

https://www.reddit.com/r/law/comments/3pv8bh/comment/cw9t52d...

I could be wrong but I don't think Twitter is a B corp.

Twitter is not a B-Corp indeed. However any company, not just B-Corps, can have a purpose other than shareholders value maximization. Check this article: https://doi.org/10.1111/joms.12660

There's an easily searchable index of B-Corps: https://www.bcorporation.net/en-us/find-a-b-corp

>any company, not just B-Corps, can have a purpose other than shareholders value maximization.

It's moving there but I don't think it's there quite yet according to case law. The board motivations at present still have to tie back to maximizing value for shareholders.

Of course they are, major investors regularly push boards to do more ESG for example

So most directors can get around the shareholder primacy rule pretty easily by tying the changes they want back to shareholder value.