It's been this way since OSX day 1 IIRC, so it's a little surprising the apple versions are still apparently inferior (if the grandparent poster is anything to go by, haven't used em in years), but it's conceivable the CLI just isn't an apple priority.
I wish they'd just give up already and copy as much (of the CLI-relevant stuff) as possible from linux, and accept that they'll need to give up a tiny amount of control over a small sliver of their OS - a sliver that they never wrote in the first place and also can't really change the api of, because that would break all kinds of things, which renders their ability to close source somewhat moot anyhow. And most users never use this stuff! The linux-conventional gnu variants are well maintained and usable in both MS world and linux world - having CLI scripts that are more easily portable across three OS's would be great. Apple's toxic control-freak nature really hurts here, and mostly just their users. I really don't get it.
Anyhow, there are workarounds (but e.g. homebrew is hit and miss), it's mostly just an annoyance they're even necessary.