Funnily enough, this is completely true, no speculation required. Honeygain is owned by Oxylabs, and so is JumpTask.
Honeygain was first established in Belarus. Not physically, there was just some dude whose name was used for legal purposes. The guy did exist for real, but did not have any power in Honeygain. You can check some older PR articles where the location of the articles are Minsk, Belarus. They did not put any effort to remove it.
Anyway, we still worked from Oxylabs office in Lithuania. After political turmoil in Belarus, Honeygain had to "make a move" so they "moved" to Lithuania and established UAB Honeygain. This happened rather recently and every employee that got greenlight for transfer had to quietly change their workplace in Linkedin. By quietly I mean not to make an announcement like "started new position at Honeygain". The thing is, they did not realize that past workplaces are clearly visible and you had cought them, OP.
To mitigate some possible risks, there were plans to act like Oxylabs "acquired" Honeygain. That was the narrative they had in mind and started a campaign regarding the announcement of Oxylabs partnership with Honeygain. There are still articles floating around about it, and they are trying to scrape it off the face of earth for whatever reason. It's chaotic to say the least.
As for JumpTask, it was created as a way to pay Honeygain users less. And it should raise suspicions even without insider information as to why JumpTask, a completely unknown project with no investors and nothing, immediatelly got a partnership with Honeygain, arguably the biggest passive income application in the world. It's just plain weird. Not weird when you know that JumpTask was created by Honeygain, and Honeygain was created by Oxylabs.
You should poke around the JumpTask "About us" page and the Linkedin accounts of the key members there. You should find the same thing there, previous employments at Oxylabs and whatnot. There are quite a few names like that in general (formerly at Oxylabs, currently at JumpTask). Only the new batches of hires start immediatelly at Honeygain or JumpTask. Another tip would be to check the archived versions of JumpTask "About us" page. People changed and they may still have some information hiding in plain sight (Linkedin, that is, or internet as a whole where articles matter).
Source: former employee of all three products.