>using Facebook because it makes event organizing and the like easier...I'm always kept in the loop because I text my friends and ask what they are doing this weekend and/or meet with my friends regularly enough that they let me know what's going on. It's become well known that I don't get updates through FB so my friends will text me invites if I haven't asked for an update.
In other words, you're demonstrating an exception that proves the rule. Organizing events (without Facebook) is not a linear problem, it's a problem where each subcomponent scales directly with the number of people involved. Maybe not O(n^2), but at least O(n*log(n)). Every change to the planning of the event has to be spread to and approved by every attendee, requiring independent contact of each. Facebook centralises this by providing a central organization system that it is as close to guaranteed as possible that everyone has access to. This brings it back close to being a linear endeavor.
Just because you claim you aren't benefiting from Facebook's competency in this area doesn't mean you aren't. You said it yourself: your friends know you are the outlier in this planning, so they can can remember to contact you separately without adding additional time complexity. They can handle all the other nuances of planning directly on Facebook and you gain the benefits without having to interact with it.
I think this is... fine? Are we concerned about our friends not using Facebook or are we concerned about you yourself not using Facebook. I don't see a problem with letting your friends organize things on Facebook and getting pulled into the loop by a member of the group.
Thing is, when facebook isn't the primary platform this doesn't have to be an O(n^2) problem. Throwing everyone in a group, whether it be on Hangouts or Signal isn't terribly hard, nor is sending out an email invite if you'd prefer that vector.
In other words, you're demonstrating an exception that proves the rule. Organizing events (without Facebook) is not a linear problem, it's a problem where each subcomponent scales directly with the number of people involved. Maybe not O(n^2), but at least O(n*log(n)). Every change to the planning of the event has to be spread to and approved by every attendee, requiring independent contact of each. Facebook centralises this by providing a central organization system that it is as close to guaranteed as possible that everyone has access to. This brings it back close to being a linear endeavor.
Just because you claim you aren't benefiting from Facebook's competency in this area doesn't mean you aren't. You said it yourself: your friends know you are the outlier in this planning, so they can can remember to contact you separately without adding additional time complexity. They can handle all the other nuances of planning directly on Facebook and you gain the benefits without having to interact with it.