On the finish of Ant-Man and the Wasp, earlier than they’re dusted, Scott goes into the Quantum Realm to get supplies in order that Ghost can survive. Hank, Janet, and Hope are observing. Janet even offers him some ideas! Every part appears positive till, you realize, Thanos. But when Janet was so terrified of the Quantum Realm and Kang, why let Scott go down there in any respect?
The reply right here is dependent upon how literal you need to get. The actual reply, most definitely, is that the Marvel Studios staff hadn’t conceived Quantumania but so there was no cause for it to be a problem. Taking that actuality off the desk, possibly Scott wasn’t taking place deep sufficient to alert Kang, or Janet felt it was a brief sufficient journey that nobody would discover. There’s no approach to say for certain, however that’s our concept.