This was made really obvious since the Gaza genocide began, the guardian was pushing propaganda really hard like everybody else, but now public opinion has shifted enough to the point that continued total denial of reality would cost the guardian more credibility so there was a noticable shift in the way they talk about it now. This way they can preserve some credibility for the next time they need to push propaganda on other fronts.

in the US the NYT is similar, they will sometimes allow stuff get published to manufacture credibility for when they actually need it. Like see the Iraq war for example.