Not the parent poster, but likely because "If you “have the resources and the knowledge” then you don’t even need the source code. You can build your own browser from scratch." is true if and only if the resources required to modify the browser are equivalent to the resources required to build it from scratch - otherwise obviously most people who can do the former do not have the ability for the latter.
No offense, but this is the only way I understand your comment too, and apparently we are several people like this. If we take your two statements example, we understood your comment as if you were saying something like "if you are fit enough to run a 100 mile ultra marathon, you can run a mile in less than 5 minutes". Or "if you are fit enough to run a mile in less than 5 minutes, you can run a 100 mile ultra marathon", I don't know. Which might not be what you meant to say, but that's what we understood and why we are surprised.
No matter the logical mistakes people are doing while reading your comment, that's not what is important. What is important is understanding each other, and we apparently didn't get your point. You could rephrase it so we can understand what you want to say. You are telling us that we are wrong in our interpretation of your logical statement but that won't help us understand it. We are not trolling you or in bad faith.
> No matter the logical mistakes people are doing while reading your comment, that's not what is important.
It's not the only thing that is important, but it is still important. If you can't understand the logic of something, that is on you to improve your skills. If you made this mistake with what I wrote, then you will be making the same mistake elsewhere, often without knowing it.
> What is important is understanding each other, and we apparently didn't get your point.
People don't get each other's points all the time. This a is normal part of discussion.
> You could rephrase it so we can understand what you want to say. You are telling us that we are wrong in our interpretation of your logical statement but that won't help us understand it.
Are you saying you still don't understand it now that it has been explained?
> We are not trolling you or in bad faith.
How do you know what is going on inside other commenters heads?