The initial question is not whether or not to process it to produce "pseudo-stereo", but rather if it should be posted as a single-channel monophonic file-set or as a two-channel interleaved monophonic file-set. Duplicating the single monophonic channel to form a two-channel interleaved stereo file does not make it stereo, but two-channel mono. If doing something different to each side (eq, delay, reverb or whatever), that will make it a form of pseudo-stereo.
I'd say it depends on where and in what form you are posting it-
If posting FLACs, I'd say post it as a single-channel file-set. The original is a single channel WAV, and doubling the channel count with identical information needlessly increases the size of the file-set.
I might make it two-channel mono if posting lossy compresses files. That may be easier to playback on some systems/devices without the sound only playing back from the left channel. Not all will do that of course, many will recognize a mono file and play it from both the left & right channels, but some will, or used to at least. I'm not sure how prevalent that behavior still is.
Disclaimer- I'm no posting authority in any way shape or form.. others around here are more astute in that area can make the socially appropriate call.