(I realize other comments downthread have already addressed some of this, no slight to others intended)

so, PQC is definitely not snakeoil, and it's actually seen uptake in a lot of things over recent years (just off the top of my head: openssh 9.0 in 2022, evolving work in implementations in TLS ciphers, etc (and as much as I fucking dislike cloudflare, they are actively funding a lot of forward-looking cryptographic work - thus being one to link to)). but as with all things cryptography, it's a moving and changing field

the industry's first post-quantum encryption

I suspect in this statement, "the industry" is load-bearing and inspecific, and resolves as "the industry of things that do what zoom do". it is a highly vague statement though, and I 🤨 at it being used as it was where it was

(e: I did look up their actual announcement about this; "UCaaS" kill me)

I'm reticent to make any further specific claims/statements re the rest of PQC, since while it is one of my areas of interest and in which I keep relatively informed, I'm also not a cryptographer by trade and consider my knowledge at best armchair-competent. pretty damn interesting field though, if you have any interest in math or cryptography it's well worth diving into it sometime :)