that doesn't matter: whether you pass it as json, tags, or whatever, if you want a kind/format supported by others, you should standardize it via a NIP, it's irrespective of the format you choose
Discussion
Only a select few people get to define new NIP standards lol... If I want my data transferrable to EVERYONE, I build it on NIP-01...
huh?
using tags is perfectly compatible with NIP-01, no idea what you're saying