
Dani L. answered 09/04/19
Graphic Designer
Graphic design and people who use spreadsheets are very different worlds. I see where the writer would be coming from that the strokes would add heaviness to the design. Basically, we want designs to be beautiful and simple. Spreadsheets are not beautiful for simple. I would say when it comes to designing tables, you will have to take the amount of information into consideration. If it is a large table with a lot of information, you will want come lines - even if they are muted.
When you are sharing information, make sure it still communicates its ideas. If taking the lines out makes the space cluttered and hard to follow - you will want lines. If the lines make you design seem busy, you can take the lines out. That is the designer touch. We have to effectively communicate while making something pleasing to look at.
I think this is all up to you as the designer. Does your information communicate best with or without lines?