During covid an image of the spoilt ballot papers was projected rather than everyone crowding around them being held up.
I am trying to explain to you. This is what happens. No paper can be disqualified without a rep from every candidate being given the opportunity to agree the paper is spoilt. Being given the opportunity to. most don't bother most of the time.
The papers are held up one by one (or an image is projected in covid, which takes far longer, obviously) The official from the returning officer says why they are being disqualified. voting intention unclear, etc. There will be some people there, and some of them will look. They will be too far away to read. They will agree, yes, it has writing on, yes it has too many boxes ticked, whatever. if they wish to look more closely at a ballot paper, they will do so, mostly they won't.
The only ones I have ever seen closely examined and discussed are ones with ink smudges on. Can we reasonably say we know what the voters intention was? Did they vote, then drop their pen, so marking a second box too. (This happens 😂) Did they miss the box but still be close enough for it to be clear which box they think they have marked? Does their mark cover two boxes, but can we still be sure which box was intended? In these cases, the witnesses might ask to approach for a closer view, and there might be a discussion.
If the ballot paper is just written on, we just agree it has been written on, and is disqualified. We won't be close enough to see WHAT is written on it, and no one is bothered what is written on it, and even if they are, and ask to see, it would not be recorded anywhere.
I have examined papers where we needed to agree the voting intention was ambiguous or clear. That is done carefully and we take time.
I have never known anyone ask to read a paper. I have personally tried to stand near enough to read, but can't really, so without interrupting the long tedious procedure to make it longer and more tedious, I rarely know WHAT is written, unless it is large and clear, in a very thick pen, and says something short, like fuck off, or similar - which happens.