I don't get it but there's a good chunk of people who are ready to jump on anything that looks even slightly comercial by even one single aspect. I've been told my personal blog was AI generated blog spam once in the past when I had literally nothing to sell. I also don't understand the fundamental issue with having a commercial involvement as long as you aren't trying to BS people or shove advertising down their throats.
It's an abstraction over a message queue, which is only one feature among many.
But btw, as a pointy-haired dude I am becoming (although I am bald), if someone really wants to buy a message queue from me, I'll happily sell it!
I don't think there is anything wrong with your article, you are quite up front about what you are selling, so personally it is no big deal.
My personal opinion is that if you don't want to come off as selling something because your genuinely interested in tech, just publish under a different domain or pseudoname
I didn't know I was trying to sell a message queue, thanks for letting me know!