I am fat and think fat shaming is ok!

Any kind of shaming is not okay. It’s bullying at its finest. That’s why it’s called shaming. It’s shameful on the part of the bully.

It’s also very naive to presume that every fat person is fat because they ate too much. I gained 60 pounds in a very short period of time due to a disease.

The title of this thread makes me furious.

Speaking realistically about why someone is overweight and what they need to do if they want to change that may be helpful. "Shaming" on the other hand is toxic, unhelpful, abusive. Maybe you're using the wrong word for what you are meaning?

https://psychcentral.com/lib/breaking-the-cycle-of-shame-and-self-destructive-behavior/
Letting go of toxic shame can help someone start to heal from self-destructive behaviors (such as overeating). Self-compassion leads to success and happiness.

Hey folks -

We are closing this discussion as it violates our guidelines. We do not body shame here.

2. Treat others with dignity, compassion and respect

I WILL:

I will SHOW RESPECT.
I will show kindness.
I will respect that MyFitnessPal has a zero-tolerance policy for hate speech.

I WON'T:

I won’t be a bully.
I won’t belittle others.
I won’t make any derogatory references to sex, gender, age, weight, body type, disability, ethnicity, religion, or sexual orientation.
I won’t stalk other members. This includes stalking a poster through the forums, posting about past events gone sour, divulging personal information, or spreading gossip or rumors.
I won’t make stereotypes against other members.
I won’t post discussions or comments that incite racism, bigotry, hatred or physical harm to any individual or group.
I won’t endorse violence against any person or group, even if couched in humor.
I won’t publicly post information that poses or creates a privacy or security risk to any person (i.e., by publicly posting any person's contact information on the forums).