I intended to ask for this long ago. Yesterday, in the Wall Observer, a mathematically inclined connoisseur of fine typography incited me to speak up for LATEX-lovers and other TEXnicians. So yes, there is demand for this!
On a related note:
I believe we may safely presume that Satoshi would appreciate proper spacing.
Although the usage of two spaces between sentences is a dirty hack for devices which lack variable-width spacing, it is proper to separate sentences with space greater than an interword space; and the founder of this forum obviously knew that. Whatever the new forum software does, it must not collapse intersentence space to the size of interword space—lest it mangle Satoshi’s own posts!
Were it not for an idiotic decision made by HTML’s designers in 1993, browsers’ behaviour would follow that of TEX: Use intersentence space between sentences, and interword space between words. Alas! TEX spacing was discussed on www-talk; but people were too lazy, and they did not care to DTRT.
If the new forum software were to support LATEX as a markup language, then it may be easier to find some way to support proper spacing. Some way—somehow. HTML (and nowadays, CSS) are crudely limited. A web browser in 2021 cannot do what TEX did in 1978 to uphold centuries-old traditions of quality typesetting.