nostr relays can respect users' privacy, just that that has not been prioritized by most relay devs

i'm not sure that basic LLM models are that resource intensive, maybe a few Gb of data of the model but walking the paths in it is not, llama, for example, 3.5gb is the model

idk about voice recognition systems, but i think they are less intensive than LLMs for resources but maybe more for compute (they do FFTs and stuff to catch phonemes)

i'm pretty sure for maybe 5 years now most phones have had all the capabilities required to do this, and definitely no problem for a max 5 year old laptop

i think the hardest part of the formula is actually privacy respecting relays... my relay #realy already does this by requiring auth for reading DMs (it's open otherwise for read) but whatever event kind you need to be gated by auth to prevent others accessing it... that would take a small amount of customization... i hadn't thought about it but it would be simple to make a configuration to set the private event kinds that must be authed to the same as the author or as tagged in the event of that kind (that is, what you sent, and what was sent to you)