after your slit-wrists comment directed at acole, which was definitely crossing the line, I really didn't want to reply.. but I will this time. Most people on here probably won't reply until you cool down for a while, they just won't feel the need to help you if you are causing problems. Once that number hits 100%, it'll be futile to even post on here. So dude just relax.
For example yesterday I did some insane volume at heavier weights.
If I were to push myself to the limit and say do the same today while being super stiff and sore..... albeit I don't get injured, would that be beneficial?
It can be very beneficial. The thing you need to understand though is, the most important aspect of training through soreness/fatigue, is to actually dig yourself DEEPER into a hole. By increasing fatigue, it's basically like pulling an arrow back to the maximum on a bow, and then you rest a few days, or slowly deload, and your performance can increase quite dramatically past current levels. It's a more pronounced super compensation effect due to accumulated fatigue.
so generally, training through fatigue and soreness isn't a great idea; risk of injury & severe CNS fatigue increases if you push yourself past the breaking point, especially if you do it for too long (too many consecutive days & sessions too long in duration). So more experience and a high level of fitness/work capacity will make it much safer & more effective.
high frequency training routines manipulate these variables .. another thing you need to realize is, when training through fatigue, you need to understand that your "1RM" or various performance numbers change day to day. So if your fresh 1RM is 405 lb on back squat, it might be 375 when squatting consecutive days etc.. The stubbornness I talked about above, is when people think they should be hitting "fresh numbers" when in a fatigued state, that becomes a problem.
you can search things like: supercompensation effect, accumulated fatigue, delayed training effect etc
as a personal example, during one phase i'd do some reactive work and/or jumps + squatted several times per day, as often as I could. Sessions would last 15-30 minutes. Really quick warmups, some stiff leg pogo hops maybe or MR tuck jumps, workup to a heavy single, 5 rep, or 20 repper. I'd do this for say 3-4 days in a row, take a day or two off, then feel ridiculous & jump really well. I did the same thing with running, kill myself from Monday through Thursday, take 1 day off, then feel ridiculous in a race.