That's like saying "watch the decline of C++" while using javascript What does javascript run on?

Most ML advancements will use DL at the core in interesting ways.

I mean, just looking at OpenAI and Deepmind, they have relatively recently released break-through models for which building upon and extending can be done in relatively straightforward ways (DALLE 2, GPT-3, AlphaFold, OpenAI Codex, ...etc), so I don't think DL will "decline" any time soon ...