You can buy accounts on the /r/BitMarket subreddit.
That arguably != "cannot". But you can get close by using Tor via nested VPNs to access Reddit. And by paying with some suitably anonymous cryptocurrency. Maybe well-mixed Bitcoin. Or some Etherium flavor, perhaps exchanged to Bitcoin.
Alternatively, some virtual SMS sites may still work for Twitter. Or there are sites where you can lease actual hosted SIM cards.
That arguably != "cannot". But you can get close by using Tor via nested VPNs to access Reddit. And by paying with some suitably anonymous cryptocurrency. Maybe well-mixed Bitcoin. Or some Etherium flavor, perhaps exchanged to Bitcoin.
Alternatively, some virtual SMS sites may still work for Twitter. Or there are sites where you can lease actual hosted SIM cards.