There is many things in games, books, or movies that dont make much sence, but its esential for story. :-/
Indeed. When something in a game, book, or movie that is essential to the story doesn't make sense, that is a literary device typically known as a
plot hole. For example, it doesn't make much sense for Rey to be able to summon lightsabers to her hand with the force and defeat Jake Skywalker's most prodigious student in a lightsaber duel when she has had absolutely zero Jedi training. But it was essential to the story, so they went ahead and put it in.
This (among many other bad decisions in the Sequel Trilogy) was widely regarded by many Star Wars fans as a
bad decision. Storytellers seeking to avoid similar schisms in their own audiences will make every attempt to avoid building their narratives around things that don't make sense.
I would say Tav's leadership is certainly one of them.
I don't think Tav's leadership is essential to the story. Wyll could be trying to lead the group one direction and Lae'zel could be trying to lead it another and Tav could be just tipping the scales one way or another with some persuade rolls. Wyll could be doing the bulk of the talking during dialogue cutscenes and Tav could offer helpful suggestions in an advisory capacity. Tav might start out as a follower at the beginning and then become the leader over the course of the story as part of his arc. It seems like there are plenty of ways to tell an interesting story without having Tav make all the decisions from the very beginning.
That said, I am also fine with having Tav be the leader of the group right from the get-go, as long as there is a compelling narrative explanation. There are plenty of ways to set the player up as the leader of the group. In Tyranny, the player is a Fatebinder, which gives them legal power authority to order their minions about. In POE the player has objectives to accomplish whereas Eder just needs to get out of dodge, and makes the hilarious assumption that tagging along with you will be safer than chancing the brigand-riddled-roads alone. In POE2, half of your companions were sent by their respective organizations to spy on you, so they have to follow you around. The others are either longtime friends like Eder, or people who need something that only the player can offer, and agree to follow you in pursuit of their respective MacGuffins.
BG3 currently offers no explanation at all as to why Tav is the leader of the group.
