Re: No, it's stupid
"You are assuming that anyone who would break in a house has some sort of technical expertise."
If a technically savvy burglar became aware of your alarm brand and type, they might specifically target your house since they would know how to defeat your alarm. If they picked a random home, they might be up against an alarm they didn't know (or there might not be an alarm, but that doesn't help in my assertion).
An alarm doesn't mean that one should ignore all of the other safety/security suggestions. Stuff like not giving Amazon delivery sub-contractors the ability to enter your home when you are away.