This is hyperbole, of course. Nilsen liked Traveller as much as the rest of GDW; the company's success with Traveller was tempered by mistakes, it's true, but everybody involved wanted Traveller to succeed. You might say there were competing visions, and you might say that there were other priorities for GDW, and the usual issues that plague small publishing houses in the 1980s and early 1990s.
What you can't say, though, is that the quality of TNE was fueled by hatred. It did more than justice to Traveller and GDW; in fact it corrected minor errata to a degree that I didn't see in CT or MT. Heck, there's a "typo" that was part of the "primordial" intent of Traveller from the 1977 Book 2 that was quickly updated... except for that original "typo"; that item was propagated through all CT rules, through MT, and wasn't corrected until TNE. If you know it, you know it; otherwise it'll be hard to see. But it's there.
In other words, Nilsen cared enough to do a full editorial pass on setting text. And integrate the system with the House Rules. And take the setting out of Hard Times, which among other things required curating the TNS and selecting a representative sample. And write (good) sourcebooks.
If you don't love Traveller, you don't do those things -- even if I think some of them are wrong things.