Also worth noting that FTPS (FTP over TLS) exists and obviates the fuss around SSH TOFU and key management etc. Especially given we're in the era of free certificates via Let's Encrypt, this is a great option.
The main downside is people will sometimes assume you mean SFTP (not having heard of FTPS or realising they are different), and then get upset when it doesn't work as they expect. However good tooling will support both e.g. Filezilla.
The main downside is people will sometimes assume you mean SFTP (not having heard of FTPS or realising they are different), and then get upset when it doesn't work as they expect. However good tooling will support both e.g. Filezilla.