I can confirm, as a professor who hires PhD students and postdocs, I do give MOOCs some positive weight. Of course there are not one of the most important point

I can confirm, as a professor who hires PhD students and postdocs, I do give MOOCs some positive weight. Of course there are not one of the most important points in the CV, but they can and do help. If a candidate already has experience or "traditional" qualifications in the subject of interest, a MOOC is not needed and probably will be worth approximately zero. But for example, I have sometimes got CVs from candidates that had a formal education focused into topic X and are applying for a position to do a PhD in topic Y. Having taken a MOOC in topic Y tells me that they have a real interest in that subject and motivation to pursue it. They were not just applying because they saw the offer and they liked the location or the salary so why not. For young candidates that are straight out of their Master's and don't have much more to show apart from their academic record, a bunch of MOOCs also shows me that they are people who really have an interest in learning, and are not just focused in ticking the minimum marks needed for their career goals. So yes, definitely several times the presence of one or several MOOCs has had an influence in hiring processes I have conducted, and I know I'm not the only one.