Comment 3 for bug 768786

Of course, there could always be a non-default option not to remove kernels, for the rare person who needs an old one. And currently, Synaptic shows 6 versions, so you can always reinstall.

But from what you say, apparently this bug is already "fixed", i.e. shoved under the rug, leaving kernels to accumulate in Granny's computer. Sigh.