Come on guys, the reason ocelot did the whole liquid thing is to fool the La-li-lu-le-lo Ai's, Ocelot exploited the fact that the Ai's would attempt to fix a problem that appeared to be the same as a previous problem in the same way that they fixed the previous problem.
If Ocelot did not do the whole Liquid ruse, the Ai's would've devised a new solution that could not have been predicted, snake would not have been sent it, and the La-li-lu-le-lo probably would have won.
Ocelot could only play them like a fiddle if he knew exactly what they were gonna do.