That’s a question you can certainly always ask. But it does not always make sense.
Social networks live – this should come as no surprise – from the people who inhabit them. At the moment all signs point to Mastodon, whose GUI is easier for less technically experienced users than Friendi.ca. And for all those who prefer to use Friendi.ca: the ActivityPub protocol, on which Mastodon (and others) are based, could soon be supported by Friendi.ca as well.