For decades, I have used a great number of video terminal emulators. I have used for long time intervals at least 8 or 9 video terminal emulators, from the original xterm until the one used immediately before ghostty, which was kitty (and including Konsole, the Gnome terminal, the XFCE terminal, WezTerm and others).
I consider Ghostty the best video terminal emulator that I have used. For now, I have not encountered any noticeable bug yet, even if I spend a lot of time using it.
Nor have I encountered any feature that I really miss (though a few things that worked in other emulators, do not work, at least not with the default configuration, e.g. setting the title of a tab window with the standard escape sequence of characters; but the ghostty titles are fine, i.e. the pwd value while in shell and the invoked command otherwise).
I do not doubt that there may exist some bugs or missing features, but it seems unlikely that they can be seen during typical workflows. I have used it only in Linux, so I do not know anything about bugs under macOS.
It turns out its not 1986 anymore, and sometimes we want to output gasp images to our terminals
Hmm... I'm using ghostty (on macOS) since it was released and have yet to encounter a single bug. Iterm2 simply got too fat and slow over time, which was the point where I went terminal-shopping (first wezterm, which is also fine, now sticking with ghostty).
Literally all companies I've worked for a know about use Vault for storing secrets to be used during deployment.
It would be interesting to learn that this is different elsewhere.
If you want auto unseal with HSM and don't have to worry about the unseal key shards, then you can hook it up the HSM. Of course, HSMs are expensive and you also have to buy a Vault license.
Never used the product Vault.