Is it an insinuation when the user themselves has stated, on multiple occasions, that this exactly the case?

Yes, you straight-up aren't allowed to post like this:

https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu...

Even stipulating that your comment had some kind of probative value, the cost to the community of people routinely pulling this shit far outstrips that value; accusations of bad-faith commenting are one of the most corrosive forces on message boards. Demanding users not make those accusations is one of the things HN gets uniquely right.