I think that's a good thing for cross-app keys and keychain integration, but some might feel that makes iTerm2 'not an ssh client'. The PuTTY for Mac app is the port of the Windows version of Putty. Having said all that, it does not manage ssh keys. 1) Get a VPN (like PureVPN) from USA (Vip72 likes to hang when you use a non-US VPN. And, of course, iTerm2's multi-window tmux integration, session recovery, and password management are mostly intended for use over ssh. It has a built-in file upload and download via scp. It will optionally report and graph bandwidth used over an individual ssh connection. It automatically lists (under Profiles) ssh hosts on your local network if they are running avahi/bonjour and sshd, and will even connect to all of them at once with a single click.
So, my answer is 'yes', because iTerm2 is very ssh-aware. On OSes that come out-of-the box with ssh (ie macOS, Linux, OpenBSD and FreeBSD), client software that re-implements the ssh layer is rightly viewed with suspicion, and software that is simply 'ssh aware' is more common.
On Windows, in the old days, SSH wasn't built-in, and clients like Putty had to implement their own ssh layer. Termius is the best way to manage, UNIX and Linux systems, whether that would be a local machine, a remote service, Docker Container, VM, Raspberry Pi. I guess that depends on how you define 'SSH client' from a user perspective. But is it really an SSH client? Isn't it just a (very nice) replacement for Apple Terminal?
