Is Boeing 787 and 737-max safe to fly? Recently a Boeing engineer testified that 787 is unsafe to fly, there are flaws in assembly process.
very risky The FAA flags more potential safety issues on Boeing’s 737 Max and 787 Dreamliner | CNN Business
The aircraft controversy set aside, Boeing itself has been gradually going downhill ever since it merged with McDonnell Douglas in the late 1990s. In the course of assimilating its rival, it inherited the latter's bean-counter culture and constant restructuring mentality. Ironically, replacing Boeing's own stable tradition of being dominated and guided by the concerns of engineers. The woes of its Starliner are disparaging legend. Contrast that lackluster progress of a veteran company to the success of upstart Space X. _
If the relevant regulatory bodies are allowing them to fly, then the expert opinion is probably that they are safe to fly. Are you an expert who can bring something new to the table?