As long as we are talking about anecdotical evidence: my MBP with High Sierra has been running fine for the last few months. I haven't encountered any issues in my day-to-day work as iOS app developer and neither in my home use. I think it's a pretty decent release, though it didn't add any new features that I feel I really need.
Are you using anecdote to mean 'not factual/confirmed' or simply to mean 'single data point'? I understand that its common to switch between the two meanings. I can usually guess from the context but its unclear from your comment.
In any case, I would say that even a single data point of a kernel crashing bug is cause for concern.
Actually, my mid-2014 13" rMBP randomly reboots on High Sierra, even on a clean install. It leaves no trace of anything in any logs. I had to downgrade to Sierra.
