And if you know this about yourself, you learn how to go back and insert breaks. It doesn't take an...
The clarification of focusing on the boundaries and etiquette re diaries, forums and thread titles is helpful, thank you
You say "I don't think anyone can confidently say that it's most likely triggering, any more than it's most likely just hard to read without breaks", but in my experience reading something, or recounting a view on something can trigger trauma re-experience that becomes too exhausting to enable one to "if you know this about yourself, you learn how to go back and insert breaks. It doesn't take any amount of re-writing. Just...breaks.". It depends on the nature and detail of ones personal trauma story and ones degree of suffering at the time of posting; e.g. consider school/work related bullying, or being belittled for expressing oneself.
In other ways if a trauma victim has a physical disability, say one that limits vision of dexterity then that compounds things too.