Hmm I like the ones where they satirise fanboys e.g. http://www.joyoftech.com/joyoftech/joyarchives/1170.html, but it's obvious they are pro-Mac - lets go through the last few:
Of the specific URLs that you listed, most appear to satirize the "Mac cult". I wouldn't say they were "pro-Mac", rather just the opposite, implying how superficial and puerile (etc.) the fanboys are. Obviously written/drawn by people that have a lot of knowledge of the "Mac world".
Re: I love Joy of Tech!
http://www.joyoftech.com/joyoftech/joyarchives/1200.html
http://www.joyoftech.com/joyoftech/joyarchives/1199.html
http://www.joyoftech.com/joyoftech/joyarchives/1197.html
http://www.joyoftech.com/joyoftech/joyarchives/1195.html
http://www.joyoftech.com/joyoftech/joyarchives/1191.html
http://www.joyoftech.com/joyoftech/joyarchives/1187.html
etc...the ones spoofing the prices and Keynote are good, but the majority seem to be Mac-is-better type moralising.
Don't mind people poking fun but some of them are a bit nudge-nudge-Mac-is-better.
Re: I love Joy of Tech!
Chuck