It's worth noting that it's a shadowbanned domain on HN: https://news.ycombinator.com/from?site=dev.to
dev.to submissions will appear as dead by default in the "New" queue. These may be vouched, though truth to tell, I don't bother.
"Dead" submissions won't appear in Algolia search.
Vouching does require a small karma threshold.
dev.to is also shadow banned on most developer subreddits and other news aggregators I know of.