BlackRock says quantum is the main reason investors are staying away from Bitcoin. Should we listen?

I just watched this podcast episode where BlackRock's Head of Digital Assets Research (Will Su) said that the quantum threat is what's keeping Bitcoin from being mass-adopted.

From his words, "some of the folks that would've certainly come in to engage with Bitcoin have probably held back a bit because of this quantum question," and when asked by the host whether the concern is "meaningfully affecting adoption", his answer was: "Yes. 100%."

So I'm wondering, why are we delaying the response for this threat, especially if that is going to bring in more investors (and, well, more importantly, protect Bitcoin from quantum computers)? I've seen multiple proposals to start addressing this, the one on top being BIP 360 (P2MR)

Any thoughts? Am I missing something here?

This is the episode I'm talking about: https://youtu.be/Puv7Yyymy6M