[sandstrom]

I guess it depends on what you read into it.

But when I read this it seems like they are unhappy with Google no longer enforcing their view of fingerprinting:

    We think this change is irresponsible. [...] We are continuing to 
    engage with Google on this U-turn in its position and the departure it
    represents from our expectation of a privacy-friendly internet.

[IanCal]

Yes, they call it out as a bad change and are making a statement that it will be hard for companies who use this to justify it.

[swores]

They (ICO) are saying two things, they're saying that regardless of Google's policy they will go after companies they find to be using fingerprinting to bypass a user's right to privacy (this is the part you've focussed on), and they're also saying that Google should cancel this change and return to having it banned as their policy, with the implication that Google actively policies their own policy and would therefore prevent people from doing fingerprinting without ICO having to get involved (which is what the person you originally replied to was focussing on).

Their comment that you said you didn't understand made complete sense in the context of that aspect of the ICO's post, but you seemed to not see a link between the ICO wanting Google to reinstate the ban and seeing that as Google policing that subject on their network.