As far as the quality of pdf’s produced by the online reader goes, the publishers have made it plain in the past that they are concerned about copies of the magazines ending up on the internet. With good reason actually: there are copies of other magazines freely available in high definition as soon as they are published.
ME/MEW have apparently taken a course midway between that and precluding digital publishing altogether:
– they have configured the reader to allow only one page to be printed at a time, making it tiresome to print (to pdf or otherwise) the full copy.
– they (or the reader) have limited the resolution available when printing so that the copy is, while hopefully usable, relatively poor. Of course if the original drawing or whatever is poor to start with (as evidenced by the magazine version) it will only get worse in this case.
It’s curious that the publishers of those other magazines appear not to take similar steps. I assume that they think the problem has a minimal effect on their paid circulation, perhaps rationalising that 98% (plucked out of the air) of their potential base wouldn’t have the wherewithall to find the pirate copies anyway.
It’s also true that some book publishers put full pdf copies of their books out there as “trial copies” knowing that most people dislike reading on a screen and that anyone who is seriously interested will likely buy the book (I’ve done it myself). I’m not suggesting that the magazine publishers are doing this but they may consider that effect in the pirate copies.