I get what you’re saying. A project like FCC needs volunteers who are willing to deal with many different levels of frustration. There are volunteers who dedicate a lot of time to triaging Issues. That doesn’t have to be you. Feel free to use filters like “confirmed” instead of trolling all the Issues.
Don’t take this as dismissive, but you are also experiencing a frustration of being a front-end developer (as opposed to your experience working with mainframes). The UI is always guilty until proven innocent. Every user error or intermittent outage gets reported as a bug, and it gets reported as a UI bug first.