If the change on Logstash were not enough, the same has been done for Beats: https://twitter.com/jkowall/status/1398765959213617152?s=20 I had proposed we submit a PR to add a “OpenSearch” plugin for Logstash, but now it seems like Elastic is doing this very much to hinder the open-source community. I strongly suggest the use of Fluentd/Fluentbit not only for logs but since it also incorporates a Prometheus Node Exporter now in a single agent. I also very much like Vector.dev as a log shipper or log-to-metric converter.
This was just a matter of time. Personally, I must admit it came even faster than I thought it would. I guess it will keep on expanding (Elasticsearch DSLs are good candidates for example)
Some more info: