I use X-Ray directly via AWS Powertools for Lambda[1] instead of going through OTel. The underlying AWS X-Ray SDK team pushes OTel pretty hard in their README[2] and Github issues, but the current situation is that OpenTelemetry is just not production ready for serverless applications.
[1]: https://docs.powertools.aws.dev/lambda/typescript/latest/
[2]: https://github.com/aws/aws-xray-sdk-node