I feel like this is a misunderstanding, though I admit I'm splitting hairs here. DLSS is a form of TAA, and so is FSR and most other modern upscalers. You generally don't need an extra antialiasing pipeline if you're getting an artificially supersampled image.
We've seen this technique variably developed across the lifespan of realtime raster graphics; first with checkerboard rendering, then TAA, then now DLSS/frame generation. It has upsides and downsides, and some TAA implementations were actually really good for the time.