The CZ Bren 2 has become the de-facto "new NATO rifle" for several former Eastern Bloc nations. The Czech Republic, Hungary, Ukraine and Poland (Border Guards) all employ the Bren 2, as do customers as far-flung as Indonesia, Mexico and France (GIGN). A seriously flawed firearm does not repeatedly meet stringent testing requirements for national procurement. It simply does not succeed in those tests. So to imply that the Bren 2 is somehow inferior with your unspecified "drawbacks / issues" and failing Gas Blocks runs directly counter to common sense and intuition.
I don't have a dog in this difference of opinion, as I am an equal opportunity owner of everything that repeatedly goes "bang" that I can lay my grubby mitts upon. Sure, I have a CZ Bren 2, and I believe that it is an excellent service/utility rifle in its 14" configuration. But the CZ Bren 2 is hardly the hill that I am prepared to die upon. If you can prove to me that the design is truly flawed, with multiple recorded incidents of parts failure, then I will happily admit that you were right and I am wrong. But until you provide that documented proof? I side with the CZ Bren 2 being the fine service rifle that countless Ukrainian soldiers have attested to in frontline video footage of nasty, dirty trench warfare in the Donbass and environs.
I believe that your personal bias towards certain firearms clouds your judgement of others. But that's just me thinking aloud... Perhaps you are correct in your negative assessment of the CZ Bren 2. But right now, you are swimming against the current of common sense IMHO....