lobste.rs is almost entirely content marketing spam, and it actually has heavier censorship of non-spam than HN does; you can see this pretty easily by checking their mod log.
I have a feeling HN would never publicize that information themselves.
Some of the most interesting discussions on HN are not directly related to computing, and they're one of the main reasons why I stick around HN (and would not be interested in moving to lobste.rs).