Having had one of the old Windows phones with a keyboard dumped on me at an old workplace, can confirm it’s completely possible for a phone to have a keyboard and be a complete piece of shit.
A good phone with a good keyboard may have some use cases. If you do a lot of writing but not any more computing power or screen space than a phone has, plus you want to be doing that on the move, then yeah. For me, can shitpost on forums using my phone in my spare time, and dealing with on-call work issues - having multiple tabs of Jira and Slack open, for instance - just isn’t really practical on a small screen.
If your job is very email-centric, then yeah, sure. Blackberry were very good for just having the stuff you need - email, vpn, ‘corporate’ office documents - in a form that worked.
All the boys think she’s a star.