That's a really uncomfortable comparison as it implies that sexuality is a choice you make like eating habits which is just flat out wrong.
Except they didn't imply that at all?
They... kinda did, though? Whether you eat meat or not is an entirely voluntary, conscious choice; sexual orientation... isn't, making the comparison drawn completely nonsensical and meaningless at best and appallingly ignorant at worst.
Not necessarily. You may have to stop eating meat for health reasons.
I'm going to let you in on a secret, non-sexual preferences and choices aren't as arbitrary as you think. Also I've encountered more than a few people who have chosen to express a sexual preference for political reasons. You can argue whether or not that makes it real, my point is all preferences come in varying degree and conviction.