Phones routinely look for specific SSIDs by their names. Imagine you’re strolling through a mall while your appearance changes every 2 seconds, but you keep yelling out the names of 5 other peoole. People will not know who you are really, but they will be able to follow you around because they will know that it’s you who yells those 5 names no matter what you look like.
Its niches are nowhere near as strong as reddit though. The only reason I can’t ditch reddit is small hobby subs and stuff like that. Their alternatives on lemmy are just not good enough, because of a hideous combination of lack of users and fragmentation.