I think the spyware has been a radioactive enough issue that any derivatives are going to make a point of cutting it out.
That said, I don't see the need. As much as I don't like what Ubuntu did with the shopping lens, I've long switched to Xubuntu anyway, which is more sanely managed. (The original reason was to get away from Unity, and their avoidance of subsequent Canonical brain damage cemented the deal.)
Significantly, when you use [KX]ubuntu, you still benefit from all the release engineering work of Ubuntu proper, including security updates---a point on which I'm a little more wary of derivatives like Mint.