No thanks.
Any confined facility, be it a bunker, ship, cave, tank or a silo like this is a death trap. Whether trapped by fire, or the enemy or whatever.
I used to work in the Minute Man ones and came to realize just to keep the crew alive there needs to be fresh air down there, a special sewage system that lifts it to the top, and much more. This silo likely has it, but it’s going to be expensive to operate, especially if the parts are antiques.
And let’s say someone buys it for that SHTF scenario. It’s then a trap. Ask Saddam, ask Hitler, ask the Japanese soldiers of WWII and the Afghan ones about their caves. You can’t because they were all trapped and wound up dead due to their lack of mobility.
Atlas sites have an emergency 4xit for just that purpose, and unlike a minuteman LCF, the control and crew quarters are more spread-out and not as far underground. Plus, the Atlas was stored horizontally and only rotated into launch position after being filled with fuel and oxidizer and pressurized with nitrogen because it’s thin aluminum skin could not support the weight otherwise. So the bulk of an Atlas site is a huge ground-level building with a roll-top roof that could probably hold 20 cars. That, and the underground buildings that contained pumps, tanks, etc., are prime for re-use.
These things are also the reason the Atlas ICBM was replaced with solid fuel missiles almost as soon as they were fully deployed.
In your examples, all the people caught in their bunker were high value or military targets facing an organized, mobile enemy. In a SHTF scenario you are likely trying to keep relatively disorganized looters at bay or stay unnoticed by larger forces. In that case a bunker that provides lots of storage room and comfortable quarters in a low profile is valuable.
Camouflage the silo and/or put a reasonably defensible structure over it and you may have the perfect place to wait out troubles. Make friends with your neighbors to keep some semblance of community and you will be even better off. Whatever you do, don’t be like Hitler or Saddam and bite off more than you can chew as enemies.