The funny thing about this is that I simply read “dumb” as “stupid” and didn’t make any connection to being mute - but thanks to the earlier comment I’ve now made the association. So, well done policing the discourse, I guess?
To answer your question, adjectives related to intelligence are ableist in origin. I don't think this needs to be explained and it's not my job to educate you or anyone else on this forum.
I doubt driveby condemnation will convince many people.
moot since the comment itself is dead/flagged but if you're calling people idiots, show me your credentials.
I think that's because without the explanation it's more or less name-calling, since the accused doesn't know what they did wrong.
Also, I thought the trained people should have learned a thing or two from Pompei not to build near volcanoes. I'll cut some slack for the people who designed Pompei, they didn't know, but everyone after that should have learned.
If someone gave me a contract to build something in modern-day Herculaneum I would say no. I think it's irresponsible to build there. In terms of lives lost it's tantamount to knowingly shipping a hundred 777s with loose screws that cause them to crash.
The number of downvotes on this thread is also exactly why we have disasters with volcanic eruptions. This is like the geological equivalent of a bunch of antivaxxers.
Railroads and highways also invite towns and cities to be built around them, so if you want to be responsible toward future generations of human lives, you should direct those major arteries through less geologically-active regions.
Hugging an active volcano never was a good idea in history and it still isn't.