It’s gotten even harder to get an academic position now and the job market is fiercely competitive so anything that you can do to differentiate yourself at this stage will help.
If you are not pursuing a career in academia, the decision to publish is up to you and the way you want to communicate your research in whatever medium you choose.
While the focus should be on completing the PhD on time, I recommend aiming to publish up to three articles or having them in the pipeline by the time of submission.
For those pursuing an academic career path, it’s important, however, where you publish. You need to publish in international peer-reviewed journals. You should generally not publish in collected volumes – that is edited proceedings of conferences – and non peer-reviewed journals.