This is all true, but as the sibling says, not really related to the change discussed here.
Firefox does indeed have a large CI system and ends up running thousands of jobs on each push to main (formerly mozilla-central), covering builds, linting, multiple testsuites, performance testing, etc. all across multiple platforms and configurations. In addition there are "try" pushes for work in progress patches, and various other kinds of non-CI tasks (e.g. fuzzing). That is all run on our taskcluster system and I don't believe there are any plans to change that.
Firefox does indeed have a large CI system and ends up running thousands of jobs on each push to main (formerly mozilla-central), covering builds, linting, multiple testsuites, performance testing, etc. all across multiple platforms and configurations. In addition there are "try" pushes for work in progress patches, and various other kinds of non-CI tasks (e.g. fuzzing). That is all run on our taskcluster system and I don't believe there are any plans to change that.