True, in general.
Unless your server is used to admin/manage other servers whose misbegotten application UIs require Flash to administer their applications. In which case you have to have Flash somewhere.
Sometimes you can dedicate a client machine to such purposes, but sometimes you need to use a server for other related applications and functions.
There is no escape from Flash until application vendors stop building their apps to require it.
> I thought flash died a decade ago...
It's the UNDEAD. I hate Flash with a passion but it's still unavoidable for certain applications.