IIoT (Industrial IoT) doesn't have time to deal with the load of bullcrap that cybersecurity is. Half of it is not even about security, but setting up moats and keeping control over users, which is very much not what you want to prioritize when setting up industrial infrastructure, and is rightfully rejected by engineers working there, who are concerned with safety and reliability first and foremost.

Though I'm afraid things are getting worse, or at least it looked so a few years ago, back when I worked in this space. The hot thing in IIoT / Industry 4.0 was basically taking all webshit technologies and deploying them on industrial hardware, to "leverage mature innovation and OSS ecosystem" or such nonsense. The problem (one of many) being, once the engineers were done trimming excessive security measures that negatively impacted safety, they were still left with node.js running on industrial controllers, now even less secure in general than it was originally.