Being gay is fine just as smoking pot is fine. Just not for me or my kids. I do not discriminate against those with whom I disagree. I do reserve the right to disagree and not to accept their ways, though.
I would support legalization of pot in my state, as I believe that legalization of pot would reduce crime that stems from the illegal pot market and would such legalization would bring significant revenue to the state. However, my child would get in a lot of trouble if I caught him smoking pot. I would have a serious talk with him, and I would try to make sure that he understands all the negative effects of smoking pot. Something being legal doesn't mean that it is OK for my child to engage in that behavior. Therefore, me considering legalization of pot being a good idea has nothing to do with how I feel about my child engaging in that behavior.
By the same token, I would do everything possible to steer my child away from any association with any organization that promotes and endorses the LGBTQ life style. That is my choice. This choice doesn't mean that I want to discriminate against LGBTQ or teach my children that being gay is a sin. I am far from it, and even though I do believe in God, I also believe that God is powerful enough to mete out his own judgment without needing my help. I will leave it up to God to figure out what causes someone to turn to the LGBTQ life style and it's up to God to reward or punish any particular LGBTQ person. I do not have a judgement one way or the other as to what's God's opinion is about LGBTQ individuals.
My responsibility as a citizen is to treat other citizens with respect and without any discrimination as long as they do not infringe upon my rights to practice my own lifestyle and raise my children in the way that I consider appropriate.
Now, to answer your question, I believe that making an LGBTQ watch face and placing it in a set of a limited number of default watch faces available on the watchOS platform is exactly that infringement of my rights to guard my child from the "in your face" LGBTQ lifestyle propaganda. That watch face should be available as an optional download, but it should not be in there as a default watch face. I know this is very subtle and most people think I'm freaking out for no reason, but this was intentionally done to appear so subtle. There was no need to do this other than to stick it to everyone who can't help but to encounter this watch face as they flip through the very limited set of default watch faces. This is, of course, a very small thing, and if it stood on its own, I wouldn't be objecting so much. However, Tim Cook goes much beyond that. He brings his social activism into the corporate culture of Apple. People feel that if they do not support Tim Cook's passion for LGBTQ causes they would be branded as bigots, just like numerous people call me a bigot on this forum. That is not such a subtle way for the CEO to impose his/her views on the employees. Why do I care? Well, for one, I'm a shareholder, and I disagree with this behavior. I would also disagree if an Apple CEO were a Christian who would try similar methods of "encouraging" his employees to "accept Jesus," etc. I think these social agendas should be kept out of the corporate world.
Why do you not want your kids to be gay?