Please Gertrude,
!. Lazy. Pilot couldn't be bothered to allow a safe margin around the area or couldn't be bothered to check route.
2. Negligent. Didn't notice the symbols on the chart or spot the gliders on the field. (And it's not a little, hard to find place but a big three runway triangle.)
3. Stupid. Knew it was there and busted straight through anyway.
4. Ignorant. Didn't know it was there for whatever reason. Or didn't know of the intensity of the various activities.
You will find that any excuse you can come up with will fit into one of those categories.
The correct authority would never not advise a transitting pilot of the intense activity. Not knowing (ignorance) that there are several activities in progress does not stop you looking out the window. The field does make a good waypoint but having found it and seeing there are gliders unpacked, it would be a good idea to avoid overflying it. That's just daft.
Let's face it, Weston is not the biggest danger area in the world and isn't difficult to avoid.
The work invovled in finding out whether it is active or not is much greater than that of just not flying through it.