Well, it's not impossible, just improbable. The odds of it being any thing other than the capture hardware is very low.
Honestech has always been low-end. Honestech/Vidbox is just a tiny company/LLC down in Austin, with a dozen or so employees, and all of their wares are just Chinese junk that I've ever seen. They made the kind of overpriced fodder you see for $100 in Best Buy. Video hardware like this just prey on unknowing consumers, as far as I'm concerned. The same quality items are available for $5 from
Aliexpress.
The cards are using all-eMPIA, or eMPIA+SAA7113. That same combo is what Easycaps use (clone 7113).
The software is a dumbed-down program that is similar to lots of other junky video capture software. Supposedly Easycap uses "old" Honestech software, but I'm dubious of the actual origin and lineage.
At worst, it's a rebadge.
At best, it's a non-rebadge that still functions the same.
Either way, it sucks.