I dont understand this. why on earth would you ever try to delete code from content browser? are cpp files called content?
how do you open them, modify them? you open visual studio, open a file, change things, compile. why would it be different for deletion? you go into visual studio, look up the file, delete it and ya done. like in any visual studio project. only thing that may be confusing is that visual studio sometimes not deleting the actual file, only just stops referencing it, so you may have to go and delete the file manually. this can happen with any project not just unreal. more of a visual studio problem than unreal.
other thing is debugging, you said “overcomplicated functions”. id argue with them being overcomplicated, thinking about what they can do, but here is one thing. at least in unreal you can go and check whats happening. can you do it in unity? can you check the source, or see the callstack?
checks are there so you can see why things are crashing. complaining about them being there, and at the same time complaining about too little information about crashing…
"But you just cant expect everyone to be an expert at day one, power to you if you like how it is but people is expecting to make games in deadlines. "
If you don’t even know the engine, why do you have deadlines? This whole logic is wrong. You need to get comfortable with the engine first, then make games for profit. Not the opposite.