The point of diminishing returns with warning windows is reached quite quickly - particularly as people become more and more used to having to click through many different "are you SURE?" windows in their own operating systems, let alone
SL. Perhaps the warning could be worded more emphatically but people would still ignore it, not having the full information as to really quite what this means in practice (and it is not as if LL will put in a box saying "if you do this a landbot WILL steal your land").
Anyway, if it is known that if you do X a landbot WILL steal your land, why not just stop people doing X? If you really need to for some reason there could be some sort of Advanced toggle, which you should know how to activate if you have enough knowledge to know what you are doing.