Cool montage. I just happened to rewatch that fight the other day. Khabib got taken down a couple times. I'm no grappling expert, but to me his groundwork and guard work look legit as fuck. Took no damage and ended up threatening Trujillo the whole round and almost finishes him with the triangle. Then took him down about 20+ times.
I think Khabib's kimura, triangle, RNC and armbars are solid. When people talk about Tony doing something off his back, I'm not sure if they've seen this fight. I give Tony about zero chance of catching Khabib with something after watching it. He's not Kevin Lee.
Young Khabib guard work: