He is not entirely wrong.
Yes, he is, because he claimed the process was "random" and "luck based" with "no skill involved". He clearly had no understanding of all the factors that can be controlled or influenced. His claim is wrong, full stop. He did not say that there are "certain factors" that are random or luck-based, this was how he described the entire process.
Truth is that no matter how much you Shift around Chances the thing itself is still Random.
No, not really. If you know what you are doing you can consistently get 1-2 Yttrium or Polonium per hour on average from a planet that drops it. Just because there are certain factors that are out of your control does not make the overall process "random" with "no skill involved". You could make the same claim of "randomness" for any skill-based task as there is always some degree of randomness in any activity. Take, for example, firing a rifle. Most people would consider this a VERY skill-based task but there are a large number of "random" factors that remain partially or even completely outside of your control, including:
-Target movement (can be very unpredictable).
-Wind (can be measured but can also change randomly).
-Variations in ammunition (even with match-grade ammo).
-Barrel temperature (varies as rounds are fired through the rifle).
-Optics calibration (never completely perfect even when properly zeroing-in the scope).
-Heart rate/breathing (not completely controllable even with training).
And so on. Yet no one would claim that a marksman's ability to hit his target with a rifle was overall a "random" task just because there are certain factors that aren't completely controllable by the shooter.
You can Increase or Decrease your Chances Based on certain Decisions and Knowledge of course.
Which is another thing which Unfortunately is in no way Explained in the Game or following any Logical System (Albeit FD Announced this to be Fixed in the Future as they will Include Methods of Scanning Planets to See what Ressources they contain etc)
However. The Final Result is and Stays a Randomly Generated one

60% or 20% Chance is still just a Chance which means its still Random
If your Unlucky you will still need Hours to get the Material you want
This is even Worse thanks to aforementioned lack of Identification. An Metal Content World might or might not Contain the Ressources you need.
Meaning the only way to know is to Check there or know of a List made by other Players where the Material is.
That is sort of the entire point here, there are MANY ways to increase your chances of finding any given material. There is still a certain amount of randomness due to the RNG for mat drops but you can still dramatically increase your chances of finding a material by doing all of the things that have been mentioned in this thread. When someone claims it's "random" or "luck based" and doesn't even acknowledge or understand these factors, they are simply wrong. They are not "sort of right", they just have no idea what they're doing. Same as if they tried to claim that firing a rifle at a target was a "random" task because of all the factors I mentioned above. Saying something has "random" elements while being able to identify the various factors that are controllable is a completely different statement than claiming that the overall process is "random". Like I've mentioned in other threads, the amount of hyperbole I've seen in some of these threads is ridiculous. It's as if certain players encounter something they can't control 100% and they suddenly give up completely and start acting as if it's a completely "random" process that they have no control over whatsoever.