Technicalities are exactly that, technicalities. Even non-fiction books often over-simplify in order to make things accessible for their readers.
If in doubt, check the dictionary. From dictionary.com for "suck":
6. to render or bring to a specified condition by or as if by sucking.
8. to draw or be drawn by or as if by suction.
(Bold mine.) There is a fair bit of wriggle-room in those definitions. So I don't actually see much wrong with: "get sucked into the vacuum of space".
And that's all without getting into the more technical discussion of the difference between suck and blow - which, as already pointed out, is a matter of perspective (and convention) rather than real technical difference.
Yes, there are lots of real errors in sci-fi and in other fiction (people getting thrown around as bullets hit them is always a favourite), but I think a suck vs blow complaint in this context is going beyond picky.