Luke 21:24 And they shall fall by the edge of the sword, and shall be led away captive into all nations: and Jerusalem shall be trodden down of the Gentiles, until the times of the Gentiles be fulfilled.
Strong's G4137
plēroō
From G4134; to make replete, that is, (literally) to cram (a net), level up (a hollow), or (figuratively) to furnish (or imbue, diffuse, influence), satisfy, execute (an office), finish (a period or task), verify (or coincide with a prediction), etc.: - accomplish, X after, (be) complete, end, expire, fill (up), fulfil, (be, make) full (come), fully preach, perfect, supply.
The faulty logic is that fulfilled and abolished means the same thing. In Luke 21:24 that would mean that the Gentiles are abolished.
Mat 5:17 Think not that I am come to destroy G2647the law, or the prophets: I am NOT come to destroy G2647, but to fulfil G4137.
G2647
kataluō
From G2596 and G3089; to loosen down (disintegrate), that is, (by implication) to demolish (literally or figuratively); specifically (compare G2646) to halt for the night: - destroy, dissolve, be guest, lodge, come to nought, overthrow, throw down.
Mar 14:49 I was daily with you in the temple teaching, and ye took me not: but the scriptures must be fulfilled.Strong's G4137
Or in the case of the faulty logic "the scriptures must be destroyed". G2647
destroyed/abolished and fulfilled mean two different things and are in no way alike or saying the same thing. That is just foolishness.