[SauronOfMordor]

Anything other than a direct hit with a 250 lb bomb would simply shake up the crew of a tank.

A direct hit with a concrete bomb can destroy a tank. I would imagine a direct hit with a 250 pound bomb will do likewise (as you point out)

There is nothing stopping the military from putting a shaped charge on a laser-guided bomb. The main difference between a gravity-propelled bomb and a rocket-propelled bomb is that one drops vertically, and the other flies horizontontally. A laser-guided bomb can hit a particular spot on a tank too, and with a much bigger warhead.

[Lokibob]

I understand you CAN do it, but why would you?

You design a mission with the correct tools. If anti-armor, you give the troops warthogs with hellfire missiles. You don't load up a B-52 with 250 lb bombs for ground support.

You can drive a screw into a wall with a hammer, but why? A screwdriver is designed to do that job.