You are absolutely wrong about that, I’m afraid.
It would only take a relatively small change to the botting networks to counter the removal of local. For example, simply adding a fresh alpha with cloaking 1 trained for each gate in their ratting area would allow them to build their own local lists and warp to safety just as they do now, countering non-WH roams just as effectively as local does. - Similar tactics would work for WHs, albeit slightly more complex due to WH mechanics. However by no means difficult to get around.
They don’t currently do this because there is no need for it, but if you create a need for it they would do it in no time. A week of coding (if that) and the bots would be back to business as usual.