Why is there a height filter but no weight filter on dating apps ?

Because weight doesn't define health.

A weight preference is not wrong. But there is a faction that is very LOUD that are trying to convince everyone that a weight preference is wrong. Those people need to shut the heck up.

You aren't a BBW. You are obese.

This causes a storm.

Lots of healthy women's weight can vary by 20 lbs depending on the time of day and where she is in her cycle. Mine always has, and that is one reason I had to stop weighing myself everyday and just stick to weighing myself at the same point in my cycle at the same time of day in order to have a better idea for if I was gaining or losing weight or maintaining. So you could end up with situations where men claimed a woman lied about her weight when she really didn't.

Not only that, but lots of women just wouldn't put their weight into a dating app, so it would be a bit self defeating.

Sorry that chubby ladies offend you so much.

A weight filter would serve no purpose. People carry weight differently. A body shape filter would make more sense.

Edit: A lot of people could easily just lie, too.

Hypocrisy my guy

others have answered your main question but I just want to point out how problematic it is to think those who are bigger aren't healthy or health-conscious, or that someone being skinny automatically means they are either

Being overweight 100% correlates with worse health, that's not "problematic" it's just the truth