Bots are literally the bane of X. Their pathetic security team sucks at minimising their activity chasing away legit members.
I don't know even if the have any security measures to determine the bots suspicious activity or not because they are in huge numbers and whenever there is any giveaway without any strings attached you would see them attacking that tweet so many members don't take part due to this thing.
I think Bots and X is very old relationship. If X had to do anything with it then they should have done it already. Somehow there is lacuna in the entire code of X and if developers try to change it then it may collapse the entire X ecosystem. I am not sure if it was the previous owner who let it flow freely throughout the X or it was unknown security bug that they never worked on?
If it is a code, you know how to fix it. If it is still not getting fixed then its definitely intentional.
Anyways, to the part where we are getting robbed by bots in Roobets promo and contest on X, I think they should be screening the followers on their accounts. Be it manually with team of lets say 5 moderators but it can be minimised slowly. The only question is whether it is worth it?