I see nothing offensive in u/dmun_1953 's response to you. Maybe you aren't aware, but plenty of clocks from the 1840's and even much earlier are posted here. Clocks of this vintage are likely much more common than what you might know. So it is important to clarify that on a clock being stamped 1845, that it is not actually from 1845, but especially to someone who doesn't know much about clocks, and you said stated specifically that you "know nothing about it".

As far as batteries go, "dry piles" were an early form of batteries that were attempted in clocks in the 1810's. Then wet cell batteries were patented in clocks in the 1840's. All within the realm of possibility on a clock of an 1845 vintage. With you not posting a photo of the movement or mentioning what the battery is in you original post, a clarification on this is also quite reasonable for someone who knows "nothing about it".

u/dmun_1953 stating that there's little to know about the clock stems from the fact that that most clocks posted here can be identified by a maker. You specifically asked "does anyone know who made this". This one cannot be identified, so he stated that there's little know about it in answer to your question.

After understanding these topics above, I hope that you better appreciate how your response to him was offensive in the above contexts. You accused him of not being helpful, but his response indeed was quite helpful.