You've obviously never torn your ACL. The procedures have not changed much in the past 15 years. They use your patellar tendon if you plan on playing sports at a high level. That's been the same for 30 years. The biggest difference from 30 years ago to 15 is they don't use metal screws and the cut is less invasive. The tools are better so the incisions are smaller. That's about it.
Tore my ACL & meniscus in the summer of 2001. And yes there have been major advancements, including as you mentioned not as an invasive operation & no metal screws, which contributed to long term trauma to the knee & difficulty returning to 100% compared to now. The fact that it’s become such a quick outpatient procedure tells you all you need to know.
In the 80s and early 90s an ACL tear was basically a career ender, but since then with advancements it’s looked at as something that isn’t an issue. Still takes time to rehab, but no, once you’re rehabbed it’s not a big deal.
If you still don’t understand that ask Melvin Bratton, Boobie Miles, etc., about how medicine has evolved in dealing with ACL tears.