If the idea of 'Accomplishments' is to be taken from the view of 'other people's eyes', then yes, I'd agree that Accomplishments are losing their value, but it is bound to happen as time goes on, on the very simple fact that more and more people will eventually achieve that accomplishment. Sure, speeding up XP rates via game updates or getting XP via illegitimate ways (either directly or indirectly) will speed up that process, it is bound to happen, as it does so in real life. And one have to remember that, this game, given all it's credit, is over 10 years old, no other western MMORPG have ever ran this long and still being able to at least retain some of the appeal, something even WoW have to stand up against. Whether desirable or not, I don't think anyone in their capacity can do anything about. Is this a bad thing? It depends on your definition of 'Accomplishments'. If it is solely to show people off your 99 cape, your 200M xp, whatever, then yes, it's bad. Can anyone do anything about it? Not unless you want to anger more people than you satisfy...
If the idea of 'Accomplishments' is to be taken to a more personal level, as in the feeling of accomplishment after setting your target, be it 120 Dungeoneering, 91 Runecrafting, or even simply Agile Top and Bottom, unless there was a new way to completely trivialise XP gains, then I don't think having a better way to train XP is that detrimental to that process, at least in my case (I cannot say much about other people as this issue is seldomly discussed). I personally level skills so I can achieve my own target of being able to do this, or being able to do that, ultimately ending the journey of being able to do everything, and that, for me, is very difficult for me to devalue.
6,924th to 30 hunting, 13,394th to 30 summoning
Kiln Record: W 19 - L 0, 14 Uncut Onyx, 6 Jad hits received (Best record: Two in the same kiln)
Obby set renewed post update: 1 (average charges used per Run: 228)
QBD drops: 13 crossbow parts, 2 Visages, 0 Kites, 0 Kits
Max Port Score Achieved: 27th April 2013