Is the self-signed certificate in RV325 that was produced by "Factory default including certificates" relatively safe? Or do you advise that I create my own?

Hi, I saw that the RV325-K9-AR has an end-of-life announcement. Does that announcement affect all RV325s or just the RV325-K9-AR? The announcement can be found here: https://www.cisco.com/c/en/us/products/collateral/routers/rv320-dual-gigabit-wan-vpn...