I've found OTel to still have rough edges and it's not really the one stop shop for telemetry we want it to be at $work yet. In particular, no good (sentry-style) exception capturing yet. They also recently changed a lot of metric names(for good reason it seems), which breaks most dashboards you find on the internet.
I have been warned by people that OTel isn't mature yet and I find it to still be true, but it seems the maintainers are trying to do something about this nowadays