That's true, but as a microkernel, seL4 has a very limited scope. It's not in the same ballpark as, say, the Linux kernel. It's more like a hypervisor. [0]
From a quick google, seL4 has around 10,000 lines of C code, whereas the Linux kernel has around 30,000,000.
From a quick google, seL4 has around 10,000 lines of C code, whereas the Linux kernel has around 30,000,000.
[0] https://sel4.systems/About/seL4-whitepaper.pdf