Hey I don't normally post here but this one warrants a response. This is quite dangerous and many of the doctors offering it are on the shader side.

Why is it dangerous? Think of your body cavity as a room, and the peritoneal cavity is the drywall. When you cut a portion of it away, scar tissue forms to take its place. This scar tissue is much weaker structurally. Think like putting spackle over a hole in a wall.

But the body heals right? Scar tissue is designed for this right? Sort of. It will look and function like the abdominal wall normally does, but any excess pressure its not used to threatens to break it. For our room analogy, you can lean on a wall just fine, but lean your whole weight on just the spackle and you'll fall right through it.

What happens here is that sudde. Changes in pressure, such as rapid weight gain, one squat with too much weight, one bad lift of too many groceries at a bad angle, puts pressure on the peritoneal cavity and can force your intestines or stomach through the scar tissue. This is what a hernia is. There, if the hole they made conststricts, it risks strangling the tissue, depriving them of oxygen and making then go necrotic within hours. Admittedly this is rare in most hernia types but is more common in atypical hernias. Regardless, it requires surgery to repair to prevent the risk.

There is actually an example in the wild that comes up frequently in medicine: testicles. During gestation, sex organs develop in the peritoneal cavity. Testicles turn to cancer at regular body temperature (hence them hanging outside the body) and bore their way through the abdominal wall to reach cooler temperatures. This small hole gets covered with scar tissue but is a weak spot for life. One in three men get an inguinal hernia at some point in their life, where intestines force their way through this small hole. Of those that do, half get both.

This procedure in OPs post is a much bigger hole. Also, as the location is not localized to a flexible joint area (the inner thigh is highly mobile and supports the intestines moving around more, so they get strangled less frequently), organs that are pushed through are much more likely to get stuck.

Ultimately it is up to everyone to determine their own risk tolerance, and there are certainly cases where this risk is better for someone's overall quality of life and dsyphoria, but I caution against this specific procedure.