PCBs, copper pours, ground planes, and you

One reason for copper pours in a DIY hobby context is that copper pours vastly reduce how much copper has to be etched away. This requires less chemical like ferric chloride and less time.

You are making a capacitor, though, when you do that.

Surely the capacitor effect isn't that significant if you add in a bunch of stitching vias though, right?