Is the Simplex network connection a single point of failure that could easily be blocked by the government?

Hello, is the network connection to the SimpleX network made same way as in Session messenger (single point of failure in the form of several seed/bootstrap nodes "hardocded" in the client software, the nodes which hostnames/IPs can be blocked on ISP/government firewalls) ?

If you know any detail on how it works, please link. Thank you