This isn't really an issue until you progress the plot a little, specifically the part where
Spoiler
Show
you have to construct a BoFu factory with the HQ and then build it with an NPC TL.
You can't buy TSE anywhere in the starting sectors;
Spoiler
Show
neither the boron research station nor the pirate base offer it.
If you lose the two abandoned ships somehow, you would have to raid the local borons and hope someone is willing to surrender a ship with an intact TSE ...
It's not a big issue since it's pretty early in the game, but the game doesn't point it out at all so it might confuse and frustrate some players.