IMO OpenUtau is fine! The community is the same as the UTAU community, generally speaking (for better or worse).
In terms of bugs, it is open source so it is constantly being updated which can cause problems. I and a few others are always happy to do heavy troubleshooting when needed.
In terms of choppiness or sounding horrible, it should be the same as UTAU in almost every way-- I think there may be a long standing 2~5ms difference in some timing as well as one overlap difference which was a choice made intentionally to avoid a long-time original UTAU error, neither cause choppiness and only cause slight perceptual differences. It is practically speaking inaudible. It also interprets oto configurations the same as UTAU does, and uses the same resamplers.
I will disclose that I am a moderator both here and in the OpenUtau discord, so I'm biased. But wherever you heard this... they
also seem negatively biased.
In the end, theres certainly no technical issue here and the rest is up to your own opinion and preference. There are certainly annoying and abrasive users who use OpenUtau, the same way there has also been annoying and abrasive users who have used and continue to use UTAU in general. It comes with the niche hobby, unfortunately!