I don’t trust any graph without at least its axes and captions, so here’s the source.
https://www.ons.gov.uk/economy/inflationandpriceindices/bulletins/consumerpriceinflation/april2024
While I think the message here is important, this particular plot seems to be of “Owner Occupier’s Housing Costs” and this capture conveniently crops the frame so that you don’t see the dip just before 2019.
If everything was equal (scale of production, subsidies, decades of shipping logistics worked out) I’d agree, but I don’t think vegan cheese is anywhere near that.
A good start would be to remove subsidies for livestock and their feedstocks. I think that would already bring the cost of vegan alternatives a lot closer.