Still for small teams/projects "Full stack" knowledge might be valuable in the sense that this developer is not the expert in all situations but has enough knowledge to make decisions on his "field" without calling a meeting every hour.
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
I mostly agree with the above, well said.
Still for small teams/projects "Full stack" knowledge might be valuable in the sense that this developer is not the expert in all situations but has enough knowledge to make decisions on his "field" without calling a meeting every hour.