Keep it polite people.
Different things get done in different ways. Doesn't mean YOUR way is best.
WRT OP, the 3.1GB Raspbian contains a huge amount of educational stuff, to ensure that a default install contains everything that the average classroom would need.
If that is not your cup of tea, there are alternatives that omit a load of that stuff.
It's pretty simple - use the distro that fits your purposes. Don't complain if a distro doesn't fit your purposes.
Principal Software Engineer at Raspberry Pi (Trading) Ltd.
Contrary to popular belief, humorous signatures are allowed. Here's an example...
“I think it’s wrong that only one company makes the game Monopoly.” – Steven Wright