Does all metal eat at copper piping?

Hello! My name is Jackie Fritz and I heard on "Holmes on Homes" that within a few years, metal touching copper pipes will eat a hole in the piping. Is this true or is Mike Holmes wrong? I take his show to be truthful and benefiting to those like me who are re-doing their homes themselves. Thank you for your time, and hopefully this will help me to know whether this is a serious mistake to avoid or something to disregard as not important.

Again Thank You,

It depends on the metals, but yes, that type of thing does happen. Look up "galvanic corrosion" in your favorite internet search engine.