In their first couple years of producing hardware, I would agree. Typically, if the name Corsair was on the PSU or RAM, you knew it was quality stuff. But then they switched OEMs, used cheaper designs and parts in their lower tier models and tried to live off their name. That never works (for very long).
They also started cutting corners in their quality control. I used to like Corsair cases, for example. In the beginning, they had good design and construction. But then we started seeing inconsistencies in build quality. I have seen more than one case that was not "true". That is, it did not have exactly 90° bends in the sheet metal. This resulted in only 3 of the 4 feet sitting firmly on the floor allowing the case to wobble. This can result in uneven pressures, and cause the motherboard to not sit flat on all the stand-offs, which, in turn, can cause undue stress at the motherboard mounting points. Not good.
The case bends not being "true" also meant the side panels were difficult to align and install properly. Note the shipping boxes these cases came in were in perfect condition suggesting they were not dropped, crushed or otherwise mishandled during transport.
We have also seen rough edges on the cut sheet metal where they should have been "finished". Typically these edges are rolled or ground down and smooth. But on these Corsairs, the edges were sharp and jagged and actually resulted in bloody knuckles.
Not fun. Other Corsairs of the same model were fine - so again suggesting inconsistent quality control.
In all fairness, that was a couple years ago so things might have changed. But with a visible scar on at least one of my knuckles, I'm in no hurry to find out.