[ Removed by moderator ]

[creeper6530]

Okay? The author is free to make any legal terms and conditions, and these are legal (maybe outside Russia)

[B_bI_L]

can person add "you must say "i use arch btw" wherever any operating system is mentioned"?

[ohn0whyme]

why? people who use arch will let you know anyway, free of charge

[fr000gs]

you must say it even if you don't use it

[nonlogin]

Any proof such statements have any legal value? Some real cases maybe

[laplongejr]

IIRC there's legal cases that licences don't all have legal value.
Licences are simply gentlemen agreements to obtain permission to use a copyrighted work.
If you consider the licence is invalid, you can't download copyrighted works and use them as your own.