Tying cultivation to the existing mech community helped a lot.
While a lot of people from that very same community might not appreciate what he was doing, it was difficult to deny a truth that seemed abundantly obvious in hindsight.
Ves found it rather funny that pretty much every human had been living alongside mechs and all of the crazy stuff that came with them, but never actually acknowledged that this was weird!
People all thought that the amazing stuff that high-ranking mechs and mech pilots could accomplish were the result of special scientific breakthroughs and such.
Even though it was a bit weird that mech pilots had to put an immense amount of effort in order to trigger 'breakthroughs' and evolve to higher life states, few if any people regarded this phenomenon as magic or mysticism.
It was quite simple for anyone to pop this illusionary bubble.
