This 100%. I'm in a space with developers and customers deploying web servers for the first time. This traffic freaks them out.

Basically a simple server listening on a port will experience hundreds of random script-probing attacks per day. And if any of them show the slightest hint of succeeding then that escalates quickly to thousands per minute.

You don't need a DNS entry to "expose" the IP address (there are only 4 billion). Moving to another port reduces, but doesn't eliminate the traffic.

Telling people this freaks them out. But as long as the server is done well its just noise.