Very nice, I never heard of that site before.
A possible addition, for hardware devices, could be a field reporting their environmental footprint, that is, how much waste is produced by simply marking a product as obsolete forcing users to ditch it instead of opening it so that it can be repurposed by the community by installing lighter OSes and apps, or reused in completely different contexts (example: old phone -> IoT terminal)
PRs welcome, although I think this is more suited to something like Wikidata. As I noted elsewhere, the lack of standard identifiers for devices makes this especially hard. Companies will often release the same hardware with different model numbers at different timelines and support cycles across different geographies.
The metric to track is probably “lifetime emissions”, which a few vendors report. The majority of these are actually from manufacturing and not lifetime, resulting in every upgrade becoming an emission spike(?)
