Yes.

The longer answer is that Cameron is imitating the worst part of Blair's governing style. Making major changes piecemeal with inadequate thought and consultation.

The Conservatives would prefer to go back to the pre-devolution status quo ante. As that is not going to happen why should they not engineer a country which they think they can keep control over?

The Conservative Party has for generations considered itself the party of the union, but at the same time they always considered Labour and Liberal majorities produced by non-English MPs as a bit illegitimate.