is he an advocate for lgbt?
Yes, he has been outspoken about his support for gay rights.
Seth MacFarlane
MacFarlane has been outspoken about his support for gay rights. In 2008, prior to the holding of the U.S. Supreme Court in "Obergefell v. Hodges", MacFarlane called it "infuriating 
how old do you have to be to watch the cleveland show UNANSWERABLE who is seth macfarlane? An American actor, animator, writer, producer, director, comedian, and singer. who are his parents? Ronald Milton MacFarlane and Ann Perry. is he married? UNANSWERABLE what is his age? UNANSWERABLE what has he produced? "Family Guy" and "The Orville". has he hosted any events? Yes, the 85th Academy Awards. which movies has he acted in? "Ted", "Ted 2" and "A Million Ways to Die in the West". has he appeared as a guest in any show? Yes, "Gilmore Girls", "The War at Home", "", and "FlashForward". what are his political views? He is a supporter of the Democratic Party and has stated that he supports the legalization of cannabis. which school did he go to? Rhode Island School of Design and did he go to college? UNANSWERABLE
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Seth MacFarlane [SEP] LGBT Advocacy
MacFarlane has been outspoken about his support for gay rights. In 2008, prior to the holding of the U.S. Supreme Court in "Obergefell v. Hodges", MacFarlane called it "infuriating and idiotic" that two gay partners "have to go through this fucking dog and pony act when they stop at a hotel and the guy behind the counter says, 'You want one room or two?'" He went on to say, "I'm incredibly passionate about my support for the gay community and what they're dealing with at this current point in time". MacFarlane, in recognition of "his active, passionate commitment to humanist values, and his fearless support of equal marriage rights and other social justice issues", was named the Harvard Humanist of the Year in 2011.