Yeah this is true, and I’m such a spiteful human being I actually take on the ux suffering just to screw them. You have to embrace it.
Is that a company-wide policy or just between eg. you and your team? Which country?
EDIT: Just to add, the employer does not have a policy for communications between team members.
I think long ago, Signal used to display phone number just beneath name when you are chatting someone. That always made me a bit uncomfortable. Now they don't do that, only displays name.