Every addition or subtraction has a chance to lose people. While many people may only claim they will quit at any stupid change, there are still people who stay true to their word. I am one of the people who quit and refuse to touch WoW because of that level boost.
Am I vain? Possibly, Carly Simon did write a song about me. Now that a much-needed joke happened, let me play devil's advocate against myself.
WoW had a decent excuse to add their skip. They were getting ready to launch their sixth expansion (I'm discounting any that were given out prior to the addition on cash shop, though I'd like to add the earliest ones didn't come with the training hall.). Despite the fact that they already did have a major trim with Cataclysm, they still had a big chunk of exp to get through to get new players up with their friends.
Were there alternative ways? Yes. They could've significantly boosted exp from quests, while lowering total exp to level. They always did for expansions anyways, so why not just go insane on it?
FFXIV is going into its second expansion. As it is now, if you do your daily roulettes and MSQ, it's very easy to get to 60 before hitting Heavensward. I did that with an alt I made post-HW. And you get enough gil that you can buy the white colored gear closest to 60 easily. I struggled through Heavensward at release. My alt finished quite quickly.
Right now is honestly way too early to add a way to skip.
Now, let's switch to another topic: the cash shop.
When FFXIV added this, there was a huge uproar in the community. People considered the initial mount and minions as P2W. You still see dissidents of that addition today.
Should I also note that this opens up a new avenue for RMT? They're not afraid to invest some money already. Now you've given them a pass to new places so they can screw the prices of new stuff like newer mats. Until SE puts in an effective method of eliminating illegal RMT, I'm against the idea. WoW at least added a method to legalize it.
You can already skip cutscenes, which speeds things up. WoW didn't do cutscenes often.
Can the story use some trimming? Yes. Why do I have to help a paranoid ex-Garlean kill bugs and tigers? Why not lower the amount of items needed collecting and merge quests? Have him make you kill two swarms to lower the buzzing, and gather two tiger hides to help him make up for lost time? Why do we have to keep pointlessly going back to the Waking Sands when we're wearing a perfectly good linkpearl? Why is melding part of the storyline?
I think I lost my train of thought somewhere. My major point is that there are ways to do this without a skip potion, people are idiots, and blah blah blah.