[tablespoon]

> That's a styling issue, not to be solved by typing two spaces unless you're using a typewriter. Just adjust the size of a space to the appropriate size when the text is rendered for the reader (in a word processor for example).

Except that advice is way less accessible and has a fairly high cost-benefit ratio:

* Typing two spaces after a sentence: something everyone who can type already understands.

* "[A]djust[ing] the size of a space to the appropriate size when the text is rendered for the reader (in a word processor for example)": something only a tiny fraction know how do do, and even fewer are comfortable with. It's likely some unintuitive UI that is nonstandard, and that has even been changed at points between different versions of the same Word Processor.