There is much validity in what is being stated here. Those of us old film guys with tried & true hardware know what we can trust.
I bought and have had a 3051 since 1982, ~$250 then as I remember. Yes, it is a beast and yes, it is heavy. Not really intended for a lot of field use.
I did because I was doing macro stuff in botanical gardens and the like. I have shot a C5 Celestron with a 2X on it. That's the equivalent of 2500mm.

There are old secrets about tripod use that do not seem to be mentioned very often anymore.
1. Never extend the smallest leg sections unless absolutely needed.
2. Never extend the center column more than is needed, if at all.
3. Do not use the rubber feet outdoors.
4. Always make sure everything is locked down tight.

These are all meant to help increase stability.

Each person must work with what they have to figure out what works best with their particular gear.

Most of us wound up buying at least 3 tripods before we figured it out.

I always remember George Lepp saying, "There is No Such Thing As Too Much Tripod"

You can't. But you can get a sense of how vibration-resistant a tripod is. Clearly, if you tap harder it will take longer, but after you've tapped the camera 10X you'll be able to determine which one is more stable. I suppose if you really needed to be precise, you could screw a lens plate to a couple of 2x4s similar in length to the lens and camera, that are glued/screwed together and attach them to the tripod head. Then mount a laser pointer to the end of the 2x4 stack, and set it up so that it is pointed at a target about 25 ft away - you could use an archery target. Set up a weight that will fall onto the 2x4 stack. Using a second camera in slow motion, you could focus it at the target, drop the weight and watch and actually measure the vibration as the laser point moves off center and returns. But this is not about deciding whether or not a Gitzo Series 5 is more /less stable than a RRS Series 4. But if you want to see if it pays to get a really solid platform, then you will likely see the difference between something like a 3021 and a midrange priced tripod ($600 or so).