> How does it "trick" you into installing a flash plugin? I'm pretty sure you can select not to install any proprietary software.
At install time it asked me if I wanted to include some other packages that are "restricted", such as the mp3 codecs. Using the mp3 codecs as an example tricked me into thinking they were restricted for patent issues, not because of a restrictive license.
> whether you want to stick with FOSS type licenses
You (and Ubuntu) are conflating software licensing with patent licensing; they are very different things. Patent licensing is only an issue in certain countries with insane laws; software licensing is a problem regardless of jurisdiction.
The flash player is installed by default because to many people a desktop system with no flash player will feel crippled.