It always was negative or rather very critical of big tech and “innovation” (aka thinly veiled turbo capitalism) and very positive about open source projects and small startups.

I think you would be hard pressed to find much positive sentiment about a company like Facebook here; eg a post 6 years ago: https://news.ycombinator.com/item?id=25662215

There are certain threads that always invite a lot of negativity just because of the subject matter. It’s relatively easy to avoid those once you spot the pattern …