I have a toolbox at home. I use different tools for different jobs. Saying we should never use the internet is like saying that I can never use my hammer. Yes it's not suitable for some jobs, but it is useful for others. I see the Internet the same way. It's a tool. What if there is need for emergency communication and the Internet is up and running? Do we ignore it because it's not "Classic" ham radio? That's foolish. I would say be able to use simplex, repeaters, Internet, whatever else is available . .
That is precisely the point.
Ham radios and operators are tools for use in an emergency, to rely on only one method is a foolish endeavor.
How good will the internet or even repeater towers be if they are burned up in a forest fire?
Many of us hams do get training in disater communications, and are members of ares and other e response organizations.
As to other posts" politely asking them to leave"
If they are not interfering with operations or placing themselves or anyone else in danger there is absolutely no reason to ask them to leave
( with the possible exception of vloggers at a fatality scene)
As i mentioned in another posts
If they cant be utilized in the communication itself they are still a valuable asset if they can observe and write.
Writing down what they hear and see is often from different angles and they may see or hear something others might miss.
An investigator often has to piece a complicated puzzle together to avoid purely circumstantial evidence.
So an eyewitness is vital to getting a clear picture of the situation.
But i do agree on one point.
If they say that if i cant do radio i wont help! The yes ask them to leave.