Im sure every QA member would know that their are millions of courses that are out in the market for being a certified testers, what matters the most is to have implemented knowledge on the way testing is performed. ISTQB- FL , AL , Agile and the list goes on. You can become a certified tester, but the quality that you should develop is to be someone with implemented knowledge of those certification.
It depends on the motive of what anyone wants to achieve.
In some parts of the world, ISTQB is the widely recognized certification; it can be a doorway to land jobs in such places. So the best way to find out is to check out the job ads.
If the goal is to have a better understanding and knowledge, then BBST course should help.
