For leadership, the whole idea of "breaking down silos" is almost always lip-service, and to the extent that is/was a core mission of DevOps, it was always doomed. Responsibility without power doesn't work, so it's pointless unless the very top wants to see it happen. Strong CTOs with vision are pretty rare, and the reality is that the next tier of department heads from QA/Engineering/DataScience/Product are very often rivals for budgets and attention.
People that get to this level of management usually love building kingdoms, and see most things as zero-sum, so they are careful to never appear actually uncooperative but they also don't really want collaboration. Collaboration effectively increases accountability and spreads out power. If you're in the business of breaking down silos, almost everyone will be trying undermine you as soon as they think you're threatening them with any kind of oversight, regardless of how badly they know that they need process changes.
Anyway, the best devops people are usually excited to code themselves out of a job. To a large extent.. that's what has happened. We're out of the research phase of looking for approaches that work. For any specific problem in this domain we've mostly got tools that work well and scale well. The tools are documented, mature, and most even permit for a healthy choice amongst alternatives. The landscape of this tooling is generally hospitable, not what you'd call a desert or a jungle, and it's not as much of a moving target to learn the tech involved as it used to be.
Not saying every dev needs to be a Kubernetes admin.. but a dev refusing to learn anything about kubernetes in 2024 is starting to look more like a developer that doesn't know Linux command line basics. Beyond the basics, Platform teams are fine.. they are just the subset of people with previous DevOps titles that can actually write code, further weeding out the old-school DBAs / Sysadmins, bolstered by a few even stronger coders that are good with cloud APIs but don't understand ELBs / VPCs.