_Especially_ GitLab. Basically their entire product seems to be about building a whole bunch of separate tools and integrating them seamlessly into each other. GitLab has a built-in CI system, a deployment pipeline with Kubernetes integration, a built-in Docker container registry, performance monitoring tools for deployed applications, automated static analysis tools, etc. Describing it as "an amalgamation of 8+ open source projects or industries" seems pretty accurate.
That's by no means a bad thing though. While yes, there are downsides to tightly coupled tools, there are also advantages. If GitLab is trying to do the same thing for data analytics that they've already done for source control, they may very well succeed.