It's not just mixing them up that gets some people riled. It's the allocation of compartments. Apparently, reading left to right, it ought to be fork compartment, knife compartment, dessert spoon compartment, serving spoon compartment and teaspoons in the horizontal one.
Every so often I'll move all the forks two to the right and the knives and dessert spoons one to the left. Once you've spent a nanosecond, the first time, noticing that the forks are in the third compartment, no time is lost in picking out a knife and fork.
However, this innovation causes consternation and despair - so it's not really about time being wasted. It's about 'what makes sense.' The OH is very clear about this.
"No, no - it doesn't make sense to have the forks in the third compartment! They have to be in the first compartment! Everyone knows that!"
"Why?"
"It's just the way it is!"
"If that's true, there must be a reason."
"Because that's how they are on the table! It's obvious!"
"I don't think the cutlery know that about themselves."
"This is all wrong. I'm going to change it back."
"It's very confusing for a left-handed person. That's discriminatory."
"You're not left-handed!"
"I'm thinking of converting."
"What? What does that even mean?"
"Also, we need to have words about the arrangement of the larder. It's my contention that Worcestershire is an ingredient rather than a table sauce."
"No!"
"Your intransigence around this issue is most regrettable. If you persist in this attitude, I may have to re-consider the future of this marriage."