For me, I just don't use it often enough to log back in. It's largely been supplanted by browsing issue trackers and reading the source.

At the same time, google search results are massively less useful now and if I don't get a hit, I'm going to reach out to the source.

To that extent, I think SO has the same problem as Google - it will regress to the mean.

This is also because google search results will be flooded with SO mirrors that rerender content but with more ads.