It is certainly worth considering - especially for those with keezer covered in wood or boxed in - most modern freezers use 3 of the sides to radiate heat from the cooling system, or are very least the back panel. If they can't radiate that heat easily they will run longer and in turn that heat will warm up the keezer - in a vicious cycle.
Another good reason I bought a new chest freezer with an A++ rating - while it cost me £140, will will save me about that a year in energy compared to a 10 year old fridge or freezer. And as you've shown at current prices that can be significant.
It is/was pretty common for Americans to stick an older fridge as a drinks fridge in the basement or on a covered deck - which is fine if you have very low energy costs, but even before the current increases was an expensive option here in the UK.
I have two chest freezers, one as a keezer for beer (and overflow food fridge) and one freezer for food - the combined cost for both is approx £100 a year at current prices, as I've got them well ventilated and in relatively cool positions, out of the sun.