[Loser]

How could that be true if Ruin tech are, in fact, seeded at map creation.

This should be fairly simple to test. If the ruin tech is established at map creation it not be too hard to code a program, a cheat, that would search them out and tell you about them. Once the ruin tech is known, the player puts that tech in their research queue, and colonizes the planet. Then we know.