It doesn't work out for everybody. Lots of high quality communities outside of reddit have been invaded by people looking for an alternative and as a result they are now fighting massive traffic spikes, spam or the general reddit hive-mind taking over their discussion.
There is a noticeable uptick of barely concealed white supremacy here in the last 2 days. I would feel confident saying that the way upvotes and downvotes work on a cultural level has changed.
We've had conservatives here forever, but I haven't seen people talk about things like "replacement theory". I think there's been a definite overton window shift towards the right wing.
Yesterday there was a question where someone asked what /. is and there were 20 replies with "slashdot" in reddit style. I haven't seen a straight out of reddit comment thread like that for months.
I've definitely found myself angrier reading hacker news than I have been in the months previous. I haven't figured out if that's more of a "we become what we behold" (https://ncase.itch.io/wbwwb) or a real change.
The right-wing bent on HN has been here for at least 5 years, probably longer. I haven't noticed it get worse, just more confident because its been allowed for so long.