Again I have said that they did that in the english version. I am just pointing out that it mostly dont exist in the german one and seeing how the english one sometimes likes to go out of their way to be funny then I wonder if that is simply just tongue in cheek because of the discussion that happened more than once already here on this forum. In the lore book which is from the view of a person living in Eozrea we dont have people with us in that cases. (If they wanted to make it canon which is fine, why did they choose in the lore book to make a difference between fights? Why have it stated that most primals were done solo, while other fights were with units of elite adventurers?) Why would they ignore these other really strong indiviualds like that? Why are the scions ignoring these other heroes?
In german with the susano fight Lyse and Alisaie simply say they they will hold them back while we go and defeat him. There is no mention of other adventurers and it makes sense that there are none. Where did they come from? Your Lakshimi example also reads mostly as humor for me. Somehow these adventurers which are never mentioned ingame know already that they need to help and are coming there on their own? How would that make sense.
Susanos info states that nobody can slay a primal alone, yet with other like Tsukuyomi, who is also a primal, we can slay her alone?
Ifrit with the cave makes no sense at all either. So they captured us but let us roam free? And somehow we use that to go outside the lake and not free the others too so that we can simply escape? And we escape, there is somehow a friendly NPC outside of it (what does he do there) and we also somehow find a whole group of adventurers with similiar strenght outside the cave that also have the echo, because at that time we did not know that they can temper. Then we go back inside with these people and instead of fighting there we wait until we are brought towards Ifrit? And somehow in the cutscene we are the only one not tempered? None of it makes sense with a group.
Thordan also makes no sense. We arrive on that unknown floating island after using one airship. The adventurers are not there. They are not in any cutscene afterwards. But suddenly with Thordan not only are 7 other people there (when the dungeon before that would only have 3 more) but Thordan only is scared about us again? Why? Shouldnt he be scared about all of them? (Especially with their magic of randomly being on a island which they have no knowledge of and could not just teleport there) And afterwards we simply peace out on Middys back and leave them all to die?
Beings like Omega are also done solo, seeing how Alpha only saves Cid and the WoL.
Shinryu would be strange too. First why should Zenos be happy if you bring three other people with you to fight him..(and still somehow just wants you alone to be his "friend") and then somehow a few minutes after he took over with Shinryu we are now 8 people. Were did these come from?
Also if we have such lovely and powerful echo users at our side that can come to our help no matter when and where, why did they not help with the steps of faith? Why did we need to go around trying to get help (many of them did not want to help out of fear) and then later have these very NPCs fight on our side (they are even for the first time shown in a cutscene at the end) when we have really powerful people that we know? Why did they not help there? Who are these? Why are they never mentioned ingame by any other NPC? Why do the scions only ever care about us when we are in dangerous situations and not all those others that would have been with us from the start?
In the end my whole point was: We have done quite some feats on our own, and the rise of our strenght against Ranjit so that we can suddenly defeat him while doing not much else, still does not make much sense to me..and honestly isnt that kinda boring too? That you know that no matter how strong that sudden out of nowhere NPC is, we will probably defeat him anyways.