I think he is saying the MB method for installing and obtaining is superior to the XBMC method and that paying a small fee for something like Coverart is not a big deal if it's turn key, easy and looks great.
MB plugins are superior to XBMC in that they are more simple to install and configure- all available in a single area and quickly downloaded and installed. Sure the paying for them sucks... but the entire process is easier.
The costs might be justified for XMBC. I'd pay a few bucks for it to have an easier add on interface. Just click what you want to add- like in mediabrowser.
"Too much is almost enough. Anything in life worth doing is worth overdoing. Moderation is for cowards."