It annoys me when you read the op, then read the first reply and in their desperation to be first to respond you can tell they haven’t read the post at all and are just responding to the title.
Reading comprehension on here is shockingly bad at times. I know I’ve read a number of responses that all refer to a specific detail and thought “I don’t remember that”, so go back and re-read to find that sure enough, the person replying has just completely invented facts to fit the advice they want to give. Or people ask questions that you can clearly see the answer to if you were to just read the bloody op!
There are also people who seem to make assumptions, presumably based on their own situation. The amount of times I’ve read people refer to the OP’s husband when the op only mentioned a partner and not their sex or said they’re married is ridiculous. Then there’s the assumption that everyone that posts is a woman from England (I say England, not the UK, as people will often forget that laws in different parts of the uk can be different) and that they’re in a heterosexual relationship. I’ve even seen where an op says in the first line of their post that they are a woman in a sane sex relationship and still the first responder talks about the OP’s husband…
I am a little more forgiving over someone responding to the OP and not having seen a subsequent comment where they drip feed something crucial. Sometimes you can tell from an OP that they’re being cagey or that some info is missing so you know to check - but sometimes people will take it on face value. All relevant details really should be in the OP! For example - a poster will come on complaining their boyfriend is messaging their ex a lot and doing things to help them, giving them lifts, etc and they aren’t happy about it. You get people replying saying he’s clearly still into her, she should leave etc and then 5 pages in she suddenly mentions that the ex is 8 months pregnant with his child and that the lifts are to hospital appointments relating to the pregnancy, and the messages are purely about that etc. It completely changes the situation, but the OP gave no hint to it originally so they’d have a bunch of responses telling them they aren’t unreasonable.
I do get what you mean by disheartening. It’s more about the level of reading comprehension because it seems to reflect wider society. Very few seem to have the patience anymore to sit and read something carefully anymore - people want their information in a 30 second video clip and then move on.