This presumes that all people are informed. New people, by definition, are not that. Arguably their fault for (checks notes) getting on a social media site then?
I am saying that it is easy for a day-1 noob to feel "dunked on" based on this absolute rush of feedback, especially for e.g. someone on the wider Fediverse who was not even aware that hexbear was that way, so especially they had no chance to consent to that - no pop-up messages appeared, nothing really unless you hunt around dig and also scroll down to see it, underneath the community, they just saw a post and replied as normal but then WHABOOSH!
Also you did not explain how the person you were responding to was not merely "wrong" but rose to be fully "disingenuous". Sadly this is something I notice often with hexbear - the culture seems to value "fights", which ngl could be helpful if the goal were to use socratic discourse to achieve some end goal like Truth and/or Compassion, but far more often it looks to me, from the outside, like people who just enjoy fighting/dunking for its own sake.
You are free - and I will fight to the death for your rights to do precisely this - to do as you please, as it pertains to yourself, but when it crosses over to affect other people, then different rules come into play. Specifically, if people from hexbear will not control themselves, then that leaves others to have to do it for them - e.g. warn people what to expect from hexbear users. i.e., it is not "disingenuous" to say that hexbear users seem to be spoiling for a fight, if that is literally what happens.
I would naively think that as well - you would expand your alphabet of "symbols" to include both single letters and numbers and punctuation but also common words as well. It is still a lot of combinations to have to try though, even if less than each letter by itself.