Cert is to prove that an educational institution backs you up and qualifies you for that particular skill set.
You can self learn but nobody can back your abilities. In fact you can do a better job than those with a cert, they also will not hire you or undercut you with lesser pay.
That's the sad reality, cert is everything in Singapore because most employers demand it so.
That's the sad reality. To me, cert is only relevant for the first job in relevant industry. After that, if employer still want to undercut you when your asking salary is realistic (e.g. they pay as much for the role), then is up to you to decide whether to accept or reject.
Look at DBS, their SEED program, their hiring practices. Half of it I blame on paper so good till they f up so many times. Another half I guest South-Asian are too capable. lol.
To me, even their DBS app UX is worse than OCBC UOB.