garden variety projection - filling in the blanks about a person you cannot see; ideas we have about this second person are projected onto them - kind of like how they look on our 'screen'.
projective identification - "A term introduced by Melanie Klein to refer to the unconscious process of projection of one or more parts of the self or of the internal object into another person (such as the mother). What is projected may be an intolerable, painful, or dangerous part of the self or object (the bad object). It may also be a valued aspect of the self or object (the good object) that is projected into the other person for safekeeping. The other person [snip] is dealt with as though he or she is in fact characterized by the aspects of the self that have been projected."
(A hat tip to Dr. Abess http://www.abess.com/glossary.html I snipped a misleading phrase: the other person is changed by the projection...)
A lot of anxiety and fight/flight springs (etc.) from projective identification in face-to-face and virtual groups. Lack of physicality amplifies this at times.
***
I'm simply wondering if others have the same problem, and, if so, I'm wondering if there are there things we can do to make this forum accessible to everyone.
No doubt others have the same problem. You've described a basically structural mismatch between time and 'the time it takes'. This makes the forum less accessible to you.
But, there is no solution that can make the forum accessible to all. Why? because accessibility isn't only a matter of time and the 'time it takes'.