So when they are going for gold companies usually also get...

So when they are going for gold companies usually also get stream &/or other samples,
Which is to do the exact same thing,
To see if the mineral that a given company is looking for is there,
Then to know if it is worth drilling there.

This is done as the first step,
It is 100% normal and the way it usually if not always is done.

It would be pretty stupid for any company to just start drilling,
Without checking for and confirming a mineral occurrence first !!!!

As for their extremely ridiculous comparison to drill cores,
That is not a similar comparison and was done to the extreme.

But anyhow lets go there,
When companies drill 100's of metres if not several km's of drill cores,
They do in fact choose the best ones to put at the top of their announcements !!!!

They will say something like 0.5 metres of a high grade where it hit a nugget for example.