This has been discussed at length on this community
- Help Ukrainians
- Ban russia and belarus
- How will US/EU sanctions on Russia restrict certificate issuance?
The recap is, if you are not on the SDN list you won't get blocked. (So, most government and government-adjacent websites will be refused issuance)
As for private websites, it's good that they can have an actual certificate and can avoid asking their users to install that joke of a root certificate which can then be used to MITM them on any website.