Jenkins is rock solid. Been using it for three years to deliver highly critical software. The development experience is the worst of all ci tools since no one wants to setup jenkinspipelineunit to test the pipelines. Dagger might be the salvation here, but even that tool didn't support Jenkins out of the gate. And for those that are reading this, the statement about pipeline groovy being a trap is exactly right. Avoid writing groovy at all costs. No one on the team wants to get good groovy and if you do, you're weird. The way we do it is to just use the Jenkins file to call the scripts (or tools) with bare minimal script code.
Edit, forgot to add that I recently interviewed a bunch of candidates for a high paying job at a ai hardware company and every one of those candidates stated they worked on or near a project that involved moving from Jenkins to Gitlab CI.
Edit, forgot to add that I recently interviewed a bunch of candidates for a high paying job at a ai hardware company and every one of those candidates stated they worked on or near a project that involved moving from Jenkins to Gitlab CI.