the thing about ditching other ancient archs that may still be in use (such as i486) is the modern kernel is likely too heavy for them, nearly none of the new features put into the kernel will actually aid old archs, and people who use them probably don't care to update to the latest anyway.

While it is a little sad that the original arch is being ditched, I'm glad to see the kernel getting cleaned up a bit and making future releases easier to work on.