Exactly right - it's all about your portfolio. We spend a lot of time throughout the course talking about ways to build that portfolio, and folks on the forums support each other with feedback and help on these projects.
Completing a MOOC isn't going to help you land an interview for a job, generally speaking (although if it's any good, it should certainly help you once you do get an interview!) However if you use your study time to, for example, create useful projects that you make available on github, web apps that you host on heroku, deep technical blog posts you post on medium, etc then you should definitely get plenty of interview opportunities.
I've seen many many students go through this process, so I know it works. That includes students that hadn't been getting interviews or job offers - until I convinced them to spend time building a portfolio, and then they got multiple offers from top companies.
(There are some companies - not too many thankfully - that strictly require a PhD for DL applicants. I've noticed that such companies, that focus on credentials over actual work output, seem to overlap a lot with companies that turn out to have toxic cultures. So I'm not sure you should worry too much about them...)
Completing a MOOC isn't going to help you land an interview for a job, generally speaking (although if it's any good, it should certainly help you once you do get an interview!) However if you use your study time to, for example, create useful projects that you make available on github, web apps that you host on heroku, deep technical blog posts you post on medium, etc then you should definitely get plenty of interview opportunities.
I've seen many many students go through this process, so I know it works. That includes students that hadn't been getting interviews or job offers - until I convinced them to spend time building a portfolio, and then they got multiple offers from top companies.
(There are some companies - not too many thankfully - that strictly require a PhD for DL applicants. I've noticed that such companies, that focus on credentials over actual work output, seem to overlap a lot with companies that turn out to have toxic cultures. So I'm not sure you should worry too much about them...)