Yeah, looks like "shiny" is on everybody's lips these days. I want to say I can't blame them, but really, with millions, if not tens of millions of people playing, did you expect no one to find shinies? The usual rate is 1 in 8192, not 1 in 16777216. So of course everybody who finds one brags about it on the internet, and with the sheer volume of players, it leads to the inevitable "shiny rates have gone up!" crap we see every single time a new game comes out. I've grown so jaded to that stuff that I can't possibly believe it without proof. And guess what? We now live in a datamining-free world, so there goes any chance of finding proof for or against it in the near future.
But hey, it's not like Gamefreak hasn't been trying to make shinies more common (after gen 3 changed up things so that shinies no longer automatically meant crap IVs). We had the Masuda method from gen 4 on, which multiplies your odds by 6. We had the Pokéradar, which was frustrating yet sort of effective in gen 4. And it then made a return in gen 6, where we have the added fun of red herring patches which automatically break your chain (which is more frustrating, that or a random Bidoof? You decide). Still, this time around the Pokéradar's sole purpose is to find shinies, as opposed to gen 4 where its primary purpose was to find species you wouldn't ever encounter in any other way, and chaining was a little something on the side that got way out of hand, because shiny is awesome.
But then Gamefreak decided to throw in something for aquatic Pokémon, since there was no way to chain for these. Enter consecutive fishing, a method that's in theory impractical because your chain can be broken simply by not getting a bite, which is totally random (and rather common). Now, have you noticed the two words that change the meaning of this sentence completely? "In theory". Because in practice, Suction Cups exists, and its field ability greatly increases your chances of getting a catch, to such an extent that finding a shiny requires none of the skill and knowledge Pokéradar chaining requires, it's just a matter of fishing on cruise control until you get a shiny, and getting your chain broken by not getting a bite becomes the exception, not the rule.
I can't help but think Gamefreak genuinely forgot about Suction Cups when making this thing up, and quite frankly... I can't blame them. Sure, they programmed it into the games over and over, and who knows how much of it is copypasting, but I think we've reached critical mass in terms of game mechanics, since every little thing can be affected by so many others that it becomes hard to keep track of at times. Remember when Serebii inaccurately listed Intimidate as lowering attack by two levels, despite only having a single screenshot to work with? Well, the thing that was Intimidated was a Simple Bidoof, and things got way out of hand. Of course Serebii was going to forget about it, because come on, it's BIDOOF. HM slave extraordinaire, not extraordinary Simple abuser.
So, even if the base shiny rate remained the same, are shinies too accessible now? Should have things remained the same as in generations 2 and 3, with a flat rate of 1 in 8192? They definitely feel a lot less special than they used to, in my opinion.
Edit: Should've mentioned hordes too, they really help. Rolling the dice five times instead of one comes with obvious effects.