On the last tent I stayed in, the door zipped. That can't be what you mean.
I do understand too many stitches weakening the fabric and honestly I'm concerned about that.
I'm planning the next one. I will use the 2 doors and a "hinge" of sorts with a few lines of stitching next to each other for strength. Also going make the whole door area out of heavier cloth, maybe denim. Also the "hinges" I think. I'm still planning it in my head.