Just about to watch the related livestream so I'm speaking from a position of ignorance, here, but still...
I'm disappointed at the way the FDev seem to lurch from one extreme to the other with this stuff - either making things way too hard or too easy.
You would have thought this'd be the sort of thing where they could sit down and go through all the consumable stuff in the game and decide whether they want it to be possible to replenish that stuff and, if so, how easy it should be.
This already creates some anomalies such as, for example, SRV fuel being infinitely available whereas heatsinks aren't.
Sure, you can stock-up on mat's before you go exploring but you are, ultimately, limited in your ability to synthesse them.
That means these always going to be a finite number of reloads available and, thus, a finite limit to your exploration if you're using heatsinks.
Really seems like FDev might want to go through all this stuff and decide which things should be sustainable and which shouldn't.
Alternatively, perhaps they could expand the functionality of the Refinery module (perhaps with a class of engineering mod) so that it can refine mat's to create the things necessary for various reloads?