That doesn't factor into it, because the tariffs, bans, etc they were trying to circumvent weren't dependent on the software shipping with the device in that case, nor the separate price of the software, nor were they even necessarily primarily targeting Europe.

Each of these schemes had different sets of regulatory checkboxes they were trying to tick, and so had very different end products.

Sure as you wish, I was a PlayStation fanboy back then, since Yaroze, and surely remember YA BASIC for PS2 and Other OS for PS 3, being the only ones.

Yaroze and PS2 Linux never had anything to do with tariffs.