I have decided to finally QUIT StackOverflow at the end of 2019.

1. Key issues such as duplicates are still not resolved. Measures like not allowing to post duplicates are not implemented; nor a recommender that helps users choose the most appropriate site, or ask better questions. This puts the burden on the frequent users and moderators to keep the site useful. At the same time, duplicates and low-quality questions do cause rude comments and answers in the first place. Solving this properly would likely make the tone much nicer.
2. Migration of questions is a complicated procedure, rather than simply making the different sites "views" on the same underlying data. There is a random set of migrations that can be proposed (such as SO to stats.SE), but no way to propose others (e.g., to DS.SE) They are making our lives harder than necessary.
3. We can't flag duplicates of questions on other SE sites, even if there is a perfect duplicate.
4. The company wastes tons of money on stupid things such as WinterBash, and on projects doomed to fail such as "SO Documentation" and "SO for Teams". I understand that you need to generate more revenue, but you should listen to your users (in particular to avoid costly failures such as documentation).
5. The company does not listen to their users. A recent example is the Monica incident. This lawyeresque statement shows what is wrong: they fight their best users. But there are many more examples. "User surveys" that sound like they come from the sales department, not from user support; that avoid any of the big issues such as duplicates, low quality questions, and the resulting sometimes rude handling of such questions; and many more.
6. I do want to emphasize that I am in general in favor of a "code of conduct", and I do strongly believe we need to fight for diversity. I am all in favor of using stated pronouns, but I know that I would get them wrong often. I have not seen any of the transcripts, so I have no idea what Monica did, but we also all have heard of false accusations, mistakes, and so on. I do not think the situation was handled well by SO staff, and it only got worse and worse. A code of conduct that are community standards should actually come from the community, and be handled by the community, not by some higher entity like the company.
7. Firing mods and forced relicensing: is Stack Exchange still interested in cooperating with the community?
8. Firing Community Managers: Stack Exchange is not interested in cooperating with the community, is it?

Sorry, there is no way to further reach me.