Claims about protein intake

Hello, I have a basic understanding of nutrition but not what I would consider an in-depth understanding. I have a coworker who makes some claims to clients that seem.... questionable (based on my understanding). I was wondering if someone could give their stance on these topics to help me understand them, or perhaps there is something I am missing. **Claim 1: Excess protein consumption (esp. from meat) causes protein to calcify in the GI tract, and that consuming foods such as ground papaya seeds will flush this calcification out of your intestines.** Based on my understanding of protein: we can't store excess protein, and any excess protein is either stored as fat or excreted. I understand that there are downsides to excess protein consumption, but calcification isn't one I've read or heard of. **Claim 2: It's very important what the pH levels of the food we eat are. When you eat too much acidic food it throws your pH out of a natural range and causes lots of inflammation and other issues.** My thoughts: Stomachs are strongly acidic, and kidneys (along with blood) help regulate our pH levels. As part of homeostasis, our body will naturally maintain an appropriate pH level, within reason. It shouldn't really be an issue unless we eat almost entirely alkaline or acidic foods. **Claim 3: He tells clients to eat a diet mostly consisting of fruits, and sprouted nuts and seeds. He actively discourages others from consuming meat or protein supplementation** For people who are exercising regularly, this is nowhere near what I would recommend and it's confusing. I know I am not 100% correct but would love to hear other opinions on this.