Yes, there is persistent societal pressure to change body weight. Still, body weight is not easy to change and changes are often not long-lasting. Fatness, like height, can be a measure of overall population health but is not easy to change individually. Societal stigma is not necessarily a useful measure of “right” or “wrong”.
Fat isn’t necessarily a choice. Not apologizing? Is a choice. Standing up for yourself is a choice. Going swimming for fun is a choice. Getting on with your life, without weight loss, can be a choice. Enhancing your own health, without making weight loss the measure, can be a choice too.
“About all you can do in life is be who you are. Some people will love you for you. Most will love you for what you can do for them, and some won’t like you at all. You can’t let them stop you.” – Rita Mae Brown