Tested at 5.11.9-176.current (updated system), also tested with live 4.2 sans updates, issue is the same:
If Users -> authenticate -> Add user -> Set a password now: whatever is written will be rejected on the basis of being "too common". For instance "___/77345230+4923+904IJjsmcmmmsllMMMMOOOO__///(/&&Y(UIHahsdbhabshjdbjahsbdhbasjdbasdb"
The journal says
budgie-panel.desktop: /usr/share/cracklib/pw_dict: error reading header
everytime the "too common" message appears.
If /etc/security/pwquality.conf : dictcheck = 0
then the New user's password is settable.
Thesis: the Solus default config is to compare the given password for the new user in the Add user dialog in the Budgie GUI with a dictionary, however this dictionary cannot be read and as a result (precaution maybe) the dictionary is supposed to contain every word there ever was and ever will be.
Preferred outcome: the dictionary becomes readable, a new password of reasonable complexity is possible to set for a new user in the budgie GUI by default and there is no error in the journal.