Yes, I understand that the title is a symbol of having gone through some kind of a formative procedure. But the questions remain:
1: What knowledge, competencies, norms and behaviors are involved in the specific case of these particular titles? (I understand the parallel with the legal system, academia etc. but these are for various reasons really different from what I'm referring to!)
2: For e.g. the LRPS and ARPS titles most of what I can find revolves around a single, 'passive' formative moment: i.e. the assessment of a submitted portfolio. How does this relate to the formative process that would be involved in #1?
3: Assuming that the value is in the formative process and alignment of norms, behaviors etc., what purpose does the title really have? Should it be understood as a relic from a past era as you suggested earlier - and if so, how has it been superseded? I.e. what mechanisms does the online world offer to recognize one's peers, assuming that's relevant to begin with?
It seems that a couple of things might be involved: (a) some process of instruction or socialization; but that has remained implicit so far, (b) a rite of passage of some form in which the title is granted, and (c) the title itself, which might either be something like Freemason's handshake or could potentially be something more externally oriented - but here, too, I'm struggling to see what value-generating mechanism there would be.
In the case of a professional association as referred to by
@AnselMortensen, the potential value looks more concrete to me - they offer access to things like insurance, advice regarding copyright issues, discounts on...stuff. They also do certifications, and here, again, the value proposition is much clearer. It's a seal of approval that supposedly helps photographers in the marketplace. The RPS doesn't seem to focus on this per se, and I didn't see it mentioned anywhere. Moreover, as it's not aimed at pro photographers very clearly, and what I read online involves amateur photographers applying for these titles, I'm left rather puzzled about what these titles would mean in those instances.
PS: to be clear - this is not a critique of the RPS or any other organization offering such titles. Even if they boil down to the photographic equivalent of a "world's greatest dad" mug, that's all fine. My interest is in those who purchase the mug and why they feel it's such a nice one to have.