I think I'm around the 15,000ish mile mark across various tubeless set ups. Knock on wood, but I've never had any real drama in dealing with them. I discovered early on that road and gravel tubeless tires don't like bacon strips, and seal better with dynaplugs, but it's been pretty smooth sailing. The only MTB tires I've ever had to plug have been my XC tires with thin race casings. My "trail" tires have always self sealed, and my thick enduro/downhill casing tires just don't get tears or punctures. I've even cracked a rim on my enduro bike without tire damage(aluminum rims are a consumable item in that discipline.)