I don't have any meaningful reasons to dislike Wacom. Main reasons for me are that one tablet I had from them broke shortly after I bought it (only lasted for about 2-3 month, this was really long ago though, it had ps2 and serial which had to be both connected for the tablet to work) (might have been bad luck of course). More importantly I don't like the way they repackage/advertize their "manga"-drawing tablets but - again - that's just a personal thing.
Apple is currently still (?) taking a stance against Adobe/Flash in favor of HTML5 which is a good thing (tm) in theory (even if it's done by apple). HTML5 allows you to do all the cool stuff flash does just with open standards which will actually work on operating systems that are not windows.
No flash is also true for (almost) all smartphones and other tablet pcs at the moment. Android has a Beta quality flash player on 3 (or so) phones and windows mobile also has a beta flash player, nothing final yet though.
In short not supporting Flash is a political/evangelism thing mostly. Licence costs might play a role too but I believe that's second priority, flash would currently make the smart apple producs (iPod Touch, iPhone, iPad) more attractive. Personally I hope for the prescense of flash on the web to decrease more in favor of html5/javascript and svg animations.
The main reason against the iPad from my point of view are the lack of USB Ports and the Application lockdown similar to the iPhone (Appstore, apple review, apple enforcing bullshit rules to 3rd party apps (no pinch zoom for 3rd party)). Aside from that I see it as a very nice device to have on your living room table for quickly surfing the web while the commercials are on or to settle dinner table discussions
edit: Just skimmed the NY Times article. They make the basic mistake of comparing the iPad to a traditional Notebook/Computer. It's not meant to be that. The iPad is a genuine mobile internet device (or tablet pc if you want). It's meant for quickly surfing the web and maybe watching some youtube videos it does not try to nor can it replace a computer.