Also am worried about the move to mail, I already have fastmail, and kagi would need to create a heck of a mail client for me to even consider switching. I'd much rather have a company that does search very well, a company that does mail very well, and a good communication between the two.

And I also have less tangible worries about Vlad's demeanor when I see some of his writing in the feedback forum or discord. It comes across as ambitious but not very circumspect, but maybe that's what's necessary to make it in this sector. I won't pretend to have enough experience to offer much opinion on the matter, all I can say is that its unsettling at times.