No, it's a reality. One of the most persistent and widespread criticisms of Voyager from many quarters over several years is the show's excessive reliance on technobabble. Common criticisms are using it to pad running time, using it as an incomprehensible deus ex machina, and sometimes it's accused of misusing scientific terminology (so that it's not entertaining even on that technical level).
Truthfully, it was an issue with TNG as well, though less so; DS9 and ENT seemed to have largely kept it in check (and quite absent from TOS).
I think you summed up the technobabble criticism really well.
In any case, I'm in agreement with others here as not caring for the technobabble much. The original show had comparitavely little. Why? I believe it was partly due to having limited effects and budget. How can they shoot a wave of anti-chronoton particles at the the anomaly to close it if they can't get the effect for it?
The lack of technobabble was also probably due to the time of the original show as well. There weren't many sci-fi shows on at the time, and ST largely set the standard. There wasn't much to compare it against (Lost in Space? Voyager to the Bottom of the Sea?!?!).
In any case, I think that was one of the strengths of the original show. It didn't rely on the technobabble crutch the way that its spin-offs did. It was a leaner show, more theatrical, and, as a consequence, I think that was one of its strengths. It was a lot more theatrical in that regard, and that made the writers, the directors, and the actors work harder to make good drama (and comedy). The proof of the success of that approach is evident: the original show is still syndicated and shown 40 years after its debut. It has been on almost continously since it's premiere.
As someone else here noted, the excessive technobabble began during the Berman era of Trek on TNG. Now, as an engineer, I didn't have a problem with that initially. Taken in moderation, it did add some color to the show and help to differentiate TNG from ST. I'm not sure why there was so much more technobabble in TNG than there was in ST. Maybe it was because they wanted to make TNG more real. Maybe it was because they had better effects. In any case, it was one of those elements of TNG, along with GR perfect people edict, the A+B plot formula, kids and a shrink on the ship, which, imo, really differentiated TNG from ST. IMO, it was a pretty significant difference in the writing of the two shows.
Most of the time, I don't think it hurt TNG that much. But there were some episodes, i.e. the episode Timeless, where time is frozen on the Enterprise and the Romulan ship, where it seemed that's all the episode was about: sfx and technobabble. Even in the worsts episodes of the original ST (episodes like Way to Eden, Lights of Zetar, and the film TFF), there was, at the very least, some good characters beats and scenes.
With VOY, both the sfx and technobabble were ramped up by a couple orders of magnitude from TNG. It was really excessive and I think VOY really suffered from it. The deux ex machina comment is right on. Other examples are the stupid Nexus in TNG and all those other space anomalies Braga kept inventing, 99% of which are pure fantasy and have no basis in real science.
In fact, as Kegek pointed, most of that technobabble in VOY, hell, most of the science depicted, is just pure fantasy.
Some VOY fans have said that VOY is more like the original ST than TNG was because of its premise. One ship all alone in uncharted place, exploring strange new worlds. In premise, yes, it's similar. In execution, however, especially wrt the technobabble, and, to a lesser extent the GR perfect people edict (VOY didn't follow this rule as much as TNG did), VOY, imo, is far more like TNG. I regard it as TNG v2.
So, yeah, I really do think the technobabble was really out of control on VOY. Many times, it really was a story-telling crutch and I do think it sometimes hurt the story. I really still, to this day, don't understand why they relied on it so much in the ST spinoffs, especially TNG and VOY. It just seems largely unnecessary.
Oh, and I'd love someone to do a comparison of a tech-heavy original ST episode with a typical VOY episode. I'd wager the VOY episode would have a lot more technobabble in it by far.