It's hard to convey and interpret tone in text-format comments, especially short ones. I can kind of see where he's coming from, but it's not really hostile enough to warrant an accusation. It's curt at most.

Many readers are overly sensitive these days. If you use things like a period on the end of your sentences, and don't include emojis, then anything you say will be called out as "hostile" by some people.

https://www.npr.org/2020/09/05/909969004/before-texting-your-kid-make-sure-to-double-check-your-punctuation

Also, I've noticed many people ignore qualifiers in speech. If you use qualifiers thoughtfully, having them ignored by the reader can lead to miscommunication. I think the fact that so many people have used them without thought has led to a blindness for qualifiers. OTH, not including qualifiers can make us sound authoritative and even arrogant to some people.

For instance, in my first sentence, above, I said "Many readers...", and "...things like...", and "...by some people." If you ignore those qualifiers, what I said takes on a very different tone.

Can't win for losing.

fixed