Dumber question. I'm sure the geometry of the bike comes into play here. From looking at various drop bar models, do the 2018 Diverge Expert allow a more upright sitting position. I strayed away from purchasing a drop bar bike and opted for a flat bar for a more comfortable position. But there are not much high end hybrid flat bars bikes compared to the drop bar versions. Yes I am aware hybrids, road, and gravel/adventure bikes fall into different categories. I found flat bars are ok for short distance. Beyond that it is very uncomfortable on the wrists.
I have Specialized Sirrus (flat bar bike). I installed SQLabs Innerbarends and they are a big improvement in ride quality since they come close to acting like the hoods on a drop bar. I am able to go longer distances. I suggest you try them out.