I use Voyager and have been really impressed with both the quality and the speed of development.

So she got BS from BS

To be fair, my guess about the source of those claims is also totally unsubstantiated and quite possibly bullshit 😉

Does she hold any investment in BlueSky?

Imo, it’s way more likely she got her information about BS from the website/a press release/a contact at BS and like you said, didn’t bother to get a contrasting opinion from anyone associated with Mastodon (probably because it’s a lot harder to get ahold of someone from a distributed project like Mastodon).