Unable to write to self in graphical terminal session?

Essentially, I noticed I am unable to write to my user who is using gnome-terminal. tty returns /dev/pts/1, but I am unable to write there as root. Instead, it returns as follows:

myuser@pegasus:/$ tty
/dev/pts/1
root@pegasus:/# write myuser pts/1
write: myuser is not logged in on pts/1

I have also tried write myuser tty2, and tried not specifying the terminal, but nothing happens. How can I write to my session? The inverse works fine:

myuser@pegasus:/$ write root pts/0
hi!
please respond
root@pegasus:/# 
Message from myuser@pegasus on pts/1 at 22:05 ...
hi!
please respond
EOF

Here is what the logins look like.

root@pegasus:/# who -aT
           system boot  2025-06-19 21:34
           run-level 5  2025-06-19 21:34
myuser ? seat0        2025-06-19 21:34   ?          2982 (login screen)
myuser + tty2         2025-06-19 21:34 00:37        2982 (tty2)
           pts/1        2025-06-19 21:41             25698 id=ts/1  term=0 exit=0

myuser@pegasus:/$ loginctl
SESSION  UID USER      SEAT  LEADER CLASS         TTY   IDLE SINCE
     11    0 root      -     79869  manager-early -     no   -    
      2 1000 myuser seat0 2891   user          tty2  no   -    
      3 1000 myuser -     2911   manager       -     no   -    
    c11    0 root      -     79732  user-early    pts/0 no   -    

4 sessions listed.