Planes were used in the world wars, then we have 9/11. This is the post 9/11 era where air travel sucks so much.
Similarly:
Drones are now being used in the Russo-Ukrainian war. Eventually, there will be a “9/11” with multiple coordinated drone attacks and then the way drones are treated will be forever changed. Civillian ownership of drones will likely be heavily restricted or entirely banned.
History rhymes.
A sports stadium is different in the sense that customers are screened for weapons before entering and escape routes are very limited. It’s a confined and defined space. Having a trash can bomb is scary, but it’s gonna be hard to stop people from going outside their homes. On the other hand, being in a specific place where drones were able to circumvent security measures? That scares people from events themselves.
There are countermeasures and protections in place against drones too.
A suicide bomber doesn’t need to escape. Inside people could plant remote detonated or timed devices between any final sweep and the start of the event.
Personally, I wouldn’t put my trust in the security theater at sporting events; not in the US at least.
The combination of security theater (metal detectors) and captive sales (no outside thermoses) makes it somewhat difficult to sneak something substantial into a closed event. As for not needing to escape, we’ll if suicide is already on the table, then a drone operator doesn’t need to survive either.
Lol