I find minutiae arguments daft. The W3C HTML WG has plenty. HTML5 WG, too.
The last argument I found interesting but daft was regarding the allowance of <i> and <b> in the HTML5 UA requirements for backwards compatibility as defined by W3C Technical Architecture Group (TAG).
Cleaning House [May 2, 2007] began this argument. It veered into The Semantic Debate [May 7, 2007] which veered into Why bother? (was Re: The Semantic Debate) [May 7, 2007]. The arguments against their inclusion was continued and future abuse by authors. [Note: [WSG] Legitimate uses of <b> and <i> [January 16, 2007] on the Web Standards Group
mailing list has a concise thread.] It is difficult for me to understand the arguments against inclusion of these HTML presentational elements, when the arguments are based on assumptions of continued abuse, given that most sites which will continue to use them will use them regardless of a lack of HTML5 compliance (or, validation). It’s not as though a single, non-validating site has failed due solely to its use of italics or bold HTML elements.
Semantic arguments are intriguing: authoring semantics versus machine-readable semantics are often blurred in these arguments. Further, most arguments are based on assumptions rather than use cases. Or—Even—simple, fundamental research.
Let’s take eBay as a simple, fundamental example.

That becomes this,

eBay did not use an HTML presentation element; it rendered spans with in-line CSS. That’s odd. One of the world's largest Content Management System (CMS) engaging Web Standards. The italic and bold buttons are universally known, aren’t they. Most eBay users do not care if the text is italics or emphasis, bold or strong; it looks the same. It may have semantic significance but semantic significance has no significance with general web users. How many other world-class CMS utilize Web Standards and didn’t advertise it?
[Elementary aside: I’m certain that some would argue against such deception.]
TinyMCE
does that common-understood buttons trick but renders its styling as HTML presentational elements, <strong> and <em>.
How many other text editors and web development programs have done something similar?
I’ll confess that some arguments are beyond me. If Web Standards proposes that all presentational HTML elements are deprecated and to be replaced by style sheets, why are <strong> and <em> allowed? but not <i> or <b>.
The Web Standards argument I understand and—Seemingly—so does eBay and TinyMCE.

