Almost every language has some way to do stupid things. Say you're working in C# - you can forcefully cast almost anything to almost anything else, just like in TS. So according to you, C# is just as bad as TS in this respect, right?
You can only do this with `unsafe { }` or `Unsafe.As/.BitCast`. Casts from/to `object` are type-safe even though may not be very user-friendly or good use of the type system in general.
If that's a thing commonly needed for basic operations like letting your event handler actually access the event details, then very much yes.
Sane languages have a downcast mechanism that doesn't pretend it succeeds every time.
Weird, I don't need to do that.
Also weird that Typescript has exactly the mechanism you're talking about. Why are you acting like it doesn't?