People overthink this stuff. A graduaat vs bachelor - in marketing, nobody gives a damn about the piece of paper after your first job. They care if you can write a headline that converts or run a campaign that doesn't bleed money.
I've worked with guys lugging a bachelor's who couldn't sell ice in July. And I've seen blokes with a vocational degree land decent roles because they had a portfolio of real campaigns. The Belgian market is no different - results beat academic prestige.
Is it realistic? Yeah, if you focus on actual skills. Those online courses are smart, but they mean jack unless you apply them. Run a tiny campaign for a mate's café. Write some landing pages for a local charity. That's what gets you hired, not a line on your CV.
So stop sweating the degree type. Build a portfolio, get practical, and you'll be fine. Otherwise you're just another grad with no clue how to make a euro online.