eM Client apple M1, Rosetta necessary?

I want to install eMC 9 for on my M1 macbook and have downloaded the linked file Download eM Client for Mac | eM Client . However, I am supposed to install Rosetta first. I thought eMC supports apple silicon natively.
Then why do I need to install Rosetta?

Version 9.0.1632 supports the M1 processor according to the eM Client for Mac version history documentation, so if you have the latest Mac OS you should be right just to install this version below from the Mac version history page.


Wednesday, April 13, 2022

If you need to install Rosetta then here is the Apple info link below on that, but I would give it a go without it first.

“If you need to install Rosetta on your Mac”