DMA will work fine. I remember a time when we were rewarded for making do with what we had rather than putting a handful of CPU cores on a sensor. These do not sound interesting to me, honestly. It sounds more like they can't figure out what they need to make.
The reason why I was looking at it is because I'm trying to hook up a 1kHz sampling ADC while streaming the data over BLE, and I need either a good DMA engine that can trigger on an external pin without a CPU interrupt, or a second core. I went down the dual core route, but I'd love to hear people's experience with DMA on the nRF52's and esp32-h2's and if it's finicky or not, and it's worth investing time into.