As far as I'm concerned hijack away - This is a discussion forum.
Ok, well, if you're ok with it...
Not at all, since the omni narrator also has its advantages. Or the variants: Borges used to use the first plural in his stories. He used to say, "We are not sure this happened" or something like that; thus he gave an aura of uncertainty and very effective suspense to his stories.
There is also the 2nd singular or plural.
In addition, for example, the use of the omniscient narrator, apart from the fact that he has more freedom (and he is believed when he narrates in the present tense, because he is not taking things for granted or they were told; he knows what happened), also has other advantages . For example, when an MC is not so MC; I mean, there is the need to tell the version of other characters about the same event, what they felt, their motivations, especially the stories that ran parallel to the main one, etc., in that case the omni narrator is much more appropriate. Example: the Lord of the Rings. Because the story is known to be told by Sam, right? But it is NOT his adventure; it is not a first POV; It is the story of Frodo and all his friends.
But, all that depends, or is a choice made by the author. What I do not share is that a priori the first POV is considered outdated or ineffective.
Omni, of course, has its advantages. In addition to what you mention, one big advantage is the reader being able to know what is unknowable to the protagonist. Hitchcock uses this famously to build tension. In other words, this perspective is useful for being more objective about what's happening, as well as providing information to the reader which the protagonist doesn't have. Well and good.
But Omni is different from Close 3rd. Close 3rd is where the perspective is limited to the protagonist, but it's written using a 3rd person style. You get the closeness and limited perspective sought in 1st person, but don't have to have the character themselves telling the story. In other words, while Omni is a top-down viewpoint, and 1st is a "through the eyes" viewpoint, Close 3rd is an over the shoulder viewpoint.
For me, I have a hard time believing that the character could die if the story is written in 1st person. I mean, are they telling the story from the afterlife or something? But Close 3rd? Anyone's free game (and my protagonists die... often... and rarely get better). Also (and, again, this is probably just me), I have a harder time immersing in the story if it's in first person. When I'm reading 1st person, I feel like I'm sitting in a room with a character, listening to them talk, whereas a Close 3rd makes me feel like I'm an observer of the world along with them. Further, I think it's easier to keep track of multiple protagonists in a Close 3rd, as a perspective shift only requires shifting names and, depending on how you execute it, narrator voice. For 1st, the different protagonists use the same referent, so a perspective shift, while not impossible, is significantly more difficult.
But, again, this is a matter of preference. A great many people use 1st person and sell well. It just isn't my preference for reading or writing. Same with present tense narration; many use it, but for me, it feels a bit disorienting. Again, if I'm visualizing the character sitting across from me on the sofa, telling his/her story, it'd be strange if they told it like it's happening as they tell it.
So, in order of preference for me: Close 3rd, Omni, 1st person past, 1st person present. Unless it's noir, where I actually like the 1st person past tense. But, again, this is merely my preference.
Can't say I've ever read anything in second person, though... I'm rather curious.