Given how much normal messaging already costs them, i donโt think this is in their budget. And i say that as a monthly donator.
So even if they introduce it, it would probably have to be behind some paywall.
if we assume location sharing = latitude + longitude + unix timestamp + a ~10 minute update interval + sane defaults [0], it shouldnโt be too straining of a resource. At least I donโt imaging it would be. Itโs basically the โdataโ required to store the following as a message, โ48.858370,2.294481,1707360628โ with maybe a special header that indicates itโs location sharing data. Weโre talking less than 340 kilobytes to store/process 10,000 messages. Even if it updated every minute, youโre only sending 1,440 โlocation sharingโ messages per day IF youโve even set it to share updates for 24 hours.
Scale this to millions of people and itโs just a blip in the radar, considering its not enabled by default, turns off after some time. Heck, they could even have the client only send updates if your location has changed significantly. If youโre sharing location but your position hasnโt changed since last message sent, it could increase the time before it sends an update to further minimize the impact. Just my 2 cents.
I do agree its probably pretty low on their to-do list. Would be nice to have tho. Monthly donor here too, super happy with the app.
[0] With the assumption that it can only be enabled with some timer to auto-disable.