Nick, I'm afraid you have to take the context. Check the questions asked, all on 14 Mar by Lord West. HL6055, 56, and 59 all refer to operations involving QE carriers and V-22. Only HL6057 and 58 don't mention QE directly, but the response is valid in the context of how the bracketing questioning develops. Earl Howe uses the same response to this entire questioning thread, because he knows where LW is going with this.
In a nutshell, "look at all these reasons why a V-22 on QE would be amazing....". Earl Howe: "We don't have the money...."