Possibly related: SO requires you reach some number of upvotes before you yourself can upvote. When I use SO and try to upvote a useful answer I'm always reminded that I don't have the privilege of upvoting.

I suspect it's because so many people use SO for work. When I'm at work I'm not thinking about being a good SO user and upvoting a good question or answer, I'm focused on getting my answer and getting back into the flow of my work.

On the other hand if I'm casually browsing twitter or instagram I'll gladly like posts that are interesting and there's no cost because it's recreation time.

As a rule of thumb here in HN, the number of visits of a post is like upvotes*100+50. There are a lot of lurkers.

[In particular, I don't have an account in SO.]

I wonder how many of those 10,000 views were from logged in users? I’m guessing there are a lot of people who use Stack Overflow without ever creating an account.

Not completely true. I’m active on SO and other stack exchange sites as a consumer and bookmark tons of questions. They sync with https://Larder.io for me too. I can’t upvote though.

It's gotten brutal. I was learning a new language last year and all my posts were downvoted out of the que.