Destin has a knack for taking relatively mundane topics and making them interesting. I’ve had low expectations going into his videos on coast guard search patterns, center-pivot irrigators, and a film factory tour, but ended up enjoying them because of his emphasis on the little optimizations that are inherent in all human endeavors, and the people who carry them out. It’s like Dirty Jobs (which I also liked) but for…
I think his biggest skill is 'asking the right questions', I don't think any other YT science channel does it like he does. His recent Kodak & Submarine videos showcased it very well. He kindles the enthusiasm of people he's interacting with and lets them bring their best.
Veritasium videos are good, Likely very high budget, But he prefers to build a narrative around himself - explaining things and his questions to subject matter experts are not as interesting as Destin.