Money (spent) is the measure of someone's pollution footprint
It’s not precisely a bad heuristic that buying many things is wasteful (as I assume this comment intends to argue) but “throwing things away” is the measure, rather than “spending money”.
Indirectly consuming few electricity means you've few devices which also have a number of footprints, so it's quite a large gain
The only counter example to what I said is maybe buying land to convert it to a food forest / permaculture, and save it from another guy building a villa with swimming pool