Because Jesus didn’t say he was A door, he said he was THE door...he didn’t say he was A vine, he said he was THE true vine...he didn’t say he was A good shepherd, but THE good shepherd... etc.
So yes, those statements are all to be taken literally. If anything, the symbolism is backwards: it’s not that Jesus is like a door, it’s that a door is like Jesus.
Take a watch of this. https://www.youtube.com/watch?v=uBgsJ73aYlw
I wasted the 20 minutes watching this cute little thing...EVERYTHING IS LITERAL, he says...
I am THE door...Is that literal??? Of course...We know Jesus is the portal, the opening in to heaven...
Well, wait a minute...A portal, an opening into heaven IS A METAPHOR for door...
Who's this guy think he's foolin'? Lutherans???
Then when he gets to 'I am the true vine' he really loses it...From a 1 to 10 this guy gets a 1...At least he used some scripture...