Of course, few will be stupid enough to follow them and one can imagine a transgender girl in one's own family transitioning at age 20 and being the only conservative knucklehead insisting on calling her "him". You wouldn't be popular or invited to more family dinners.
In general, normal people are much more malleable and kind when their brains haven't been soiled by extremist dogma and these people will ultimately lose the fight.
Although it is well written, this piece pains to disguise its bedrock in religious intolerant dogma. For evidence, simply take a peek at where the author works.
Le plus ca change...