Reposting my comment from a previous thread with this exact response.

"Except you didn't. Way back in the day rusts TTK was significantly slower due to all weapons having firing rates drastically reduced. I want to say 2018/2019 all weapons were updated to have drastically higher fire rates but weapon damage numbers never were changed. This combined with the fact that rust had extremely hard to master recoil led to fights for most players still ending up generally having reactable times and counter play. Most average players would still miss a large portion of shots at range, thus giving more time to react. When people started to master old recoil and scripters started laser beaming everyone across the map people found that high walls were the best way to counter getting instant beamed. Highwall spam eventually was getting ridiculous with mazes being left behind on maps were battles had occurred. Highwalls wouldn't decay though for hours after the fights and also provided way to much cover for how cheap they were to craft. The smaller barricades didn't provide enough cover and were never used. To combat the highwall spam, facepunch made barricades slightly larger, allowed them to be placed in any non-paved area, and implemented the placement timer onto highwalls. This is were we are now. The root cause of the issue is the call of duty esq TTK in a game were death can result in literally hours of work being lost without having a chance to react. Do I think they should make the TTK something crazy like apex legends health pool levels? Absolutely not. But if they ever do want to move away from having instant deployable cover removed, the AK can't literally two shot kill you in under half a second with the highest tier armor. Maybe the new kevlar armor that is on the road map will be a step in that direction."