Follow-up to this M.Y. answer about a "chiyuv" to daven from the amud.
The answer states that a mourner for a parent should try to be shaliach tzibbur.
I question whether this rule contradicts some other principles regarding shaliach tzibbur.
This source states:
The person who acts as shaliach tzibur may only do so with the consent of the congregation. If he does not have that consent, he is not permitted to lead the davening because the davening is in place of sacrifices offered by the public, and it is unfitting for a person to offer a sacrifice in the name of the public against its will. If a person attempts to lead the davening against the will of the congregation, the congregation should not answer amen to the blessings he recites. In reciting those blessings, he is considered to be scoffing rather than blessing G-d.
I'm not sure if my shul is an example, but I know that some congregants, myself among them, do not always approve of one or two "chiyuvim". One, I think, davens too quickly and swallows some words. Another one has an annoying loud voice. I occasionally complain to the gabbai. But I sense that most of the others are not as vocal or think that a "chiyuv" cannot be challenged and these people must always be shlichei tzibbur. Perhaps, this or a similar scenario occurs in other shuls.
I'm not sure if the shaliach tzibbur needs unanimous approval or majority approval. But it seems that if the majority do not approve, how can he be considered a "chiyuv"? If the majority are regular attendants, and they really don't like his davening (or, perhaps, they just don't like his personality), does the "chiyuv" rule still have precedence?
The 2nd challenge is, IIRC, when a person is asked to be shaliach tzibbur, he is supposed to refuse up to 3 times. (I don't recall the source but I think it's in Shulchan Aruch.) In my shul, and I assume mosts others, when they know that the person is a chiyuv, they don't even ask him to be chazzan. Furthermore, the chiyuv just goes up to the bima a few minutes before davening starts, because he knows he's the only chiyuv. Shouldn't he be asked first, and isn't he supposed to refuse? In most places I've davened, either they know who is a chiyuv, or, if it's a "pop up" minyan, like at a wedding, someone asks "Is anyone a chiyuv?" and someone raises his hand, and they have him do it.
So, here, too, does the chiyuv override standard protocol?