According to Makki and Ibn Al`Arabi, it was Ibn Habeeb who made that claim. Makki rejects the claim on the basis that 67:16 is a threat.
While Makki is correct in saying that 67:16 is a threat, that threat can come true. Notice how 54:46 ends with a comparative, "The Hour is more
disastrous and more
bitter"? How did Ibn Habeeb miss that?
Those addressed in 67:16 may be swallowed by the earth AND face a bigger disaster and bitterness on the Day of Judgment. May God save us from that.
If what both verses say can happen, then neither of them abrogates the other.
Perhaps the point of conflict is seen in the use of the conjunction article بل
"Rather", which can be understood to mean the dismissal of what preceded it. So, what preceded it? It's
Therefore, what 54:46 predicts the defeat and withdrawal of "the assembly", which has been interpreted to mean the Quraish polytheists. Verse 54:46 does not cancel that prediction, which did become true; it adds to it the frightening promise of the punishment in the hereafter. No cause to think abrogation in such context.