whoah! never thought of that, but yes, it does look like a coffin. or a sarcophagus, i think would be the more correct word.
the church i grew up in had both, and used the 'altar' to store the communion wine/bread and offering plates. the ministers & elders would pray over these, standing there, before passing them around the congregation. and whoever was preaching or reading from scripture would do that from one of two lecterns on either side of the room.
the church i'm at now just has a podium. when we do communion (the church i grew up in did it every week, but this one only about 4 times a year), they move a table into the front of the room & put those things there, but otherwise there's no table/altar/liturgical-center.
anyway back to the OP -- yeah, i had the same thought, that it would be distracting for the congregation to be watching the public walk by out the windows during the service . . ? & certain times of year, would bright sunlight be pouring in?
i've been in hundreds of churches, because i worked as a pipe organ builder for ~ 5 years, and i've never seen one laid out like that. the main entrance was always at the back of the 'sanctuary' not the front. some (like Episcopal & Catholic for example) have a water basin close to the entrance, sort of right in the way of traffic, that's there for people to do a ceremonial cleansing with when they enter. but still the place the preacher stands and all is at the far end of the room when you walk in, or to the right or left if there's a side-entrance, in every church i've ever been to.