This is a bit silly - I don't think anyone has really said or claimed that you should max ram _whatever the cost_. It's 'all things being equal, more ram is better.'This is not true, and it is what caused me to waste $500 on 128GB of RAM when all I do is 1080p video editing. I fell in the "More RAM = Better" trap and it was a major waste of money. 8GB of RAM and 128GB of RAM for 1080p video editing is only a few seconds export times.
Even in your case above - your 128gb ram is better, it's a couple seconds faster. Clearly that's not optimal from a performance/cost perspective, but it's not that the ram made anything worse.
The jump from 8gb to 16gb is a much bigger difference; I'm not saying it makes sense for everyone, but it's not the same as going to 128gb.