

These devices are also typically not heavily dependent on support from external apps and tools. These devices typically perform a single important task and don’t need feature updates as frequently as other devices in the organization. The LTSC edition of Windows 10 provides customers with access to a deployment option for their special-purpose devices and environments. "The Long-Term Servicing Channel is not intended for deployment on most or all the PCs in an organization. Windows 10 Enterprise LTSC - What's new in Windows | Microsoft Docs

Wanting to hold your OS in place while also expecting to use new apps that are being developed to take advantage of new features isn't realistic. It's a 3'ish year feature lock for stability and to reduce the rate of change if/when you need to keep everything the same. Regardless of your reasoning, I'm afraid you can't run LTSC and expect new stuff to work.

Not sure how running LTSC equates to being light, snappy & intrusion free, but no need to argue that here.
