Disconcerting opening. If you want to put hash algorithms in the same category as symmetric keys in this particular case then say so without referring to them as if they are symmetric keys.
Hashes are symmetric cryptography primitives, and it's even proper to talk about key sizes for e.g. HMAC and HKDF hash-based constructions, to which Grover's algorithm applies analogously to how it applies to cipher keys.
Assuming a member of the target audience sees the connection between HMAC and symmetric keys AFA usage, would you like them to be making leaps like this in their regular usage of cryptography? (I really couldn't tell you if an algorithm that involves being able to look into the box in the middle might not have characteristics that means part or all the primitives involved are less quantum safe than an algorithm that lacks that possibility yet I'd suspect I have a lot more experience than the average reader drawn in by the title.)