Virtually all big computers (mainframes, workstations, rackmount servers, PCs, laptops, tablets, cellphones, and e-readers) use this architecture: the Linux-grade CPU doesn't directly drive things like the USB port, the HDMI signal, the SSD's flash translation layer, or the hard disk head movements. Instead, real-time MCU-like cores do it.

The only difference is that a lot of them are on separate chips.

Probably programming a computer is too advanced for most to attempt, so that doesn't seem like a legitimate criticism.