[jakob223]

Not necessarily - if I have a website that is trying to offer information to people about something, then it's better for everyone if it's more navigable/undersatandable, which session length / clicks might be a proxy for.

That said, it certainly can be.

[sp332]

If your users find what they need right away, session times will go down.

[sverige]

And perhaps total and unique visits will increase as they share it with others. At least, I wish it were that way.

[jarfil]

If session times go down, there is a lower chance users will notice the ads, and Google wants them to see the ads.