science

No it doesn't. The study that claims that had methodology designed to produce Dihydroacetone.

Two of the vapes they used were the old CE4 style clearomizers with coils that had a max wattage rating of 6W, which was their starting wattage.

The third vape was an obsolete but more modern style tank, and the only way they were able to get the GC/MS to detect it was to dope the sample with Dihydroacetone. Considering that all 4 wattages produced roughly the same levels and that those levels were 0.01-0.08ng, or 10x less than the clearomizers, it effectively means the results were negligible.

The average temperature for a nicotine vape is 400-450F, which is not high enough to break glycerin down into DHA.

Same goes for the formaldehyde study where they fired the same carts at nearly 2x the normal voltage for 90 seconds with almost no airflow.