OpenTelemetry (OTel) is designed as an open, flexible, and vendor-neutral observability framework, but Grafana Alloy, despite claiming compatibility with OTel, is critiqued for being a vendor-specific fork that encourages users to stay within Grafana's ecosystem. This vendor lock-in could lead to wasted time, painful migrations, and reduced flexibility due to its reliance on Grafana's tools for storage, processing, and visualization, such as Loki, Mimir, Prometheus, and Pyroscope. Grafana Alloy modifies standard OTel syntax, which complicates integration with other vendors and makes future migrations challenging by introducing proprietary configurations and processing defaults. While Grafana Alloy might function as a collector, its default settings and structure favor Grafana's stack, potentially limiting the flexibility that a pure OpenTelemetry implementation offers. For true OpenTelemetry support, solutions like Coralogix allow users to build observability stacks without vendor bias, ensuring long-term flexibility and control over data pipelines.