We do indeed, but all of the best written powerlifting periodisation plans incorporate them for a reason. For a typical BBer split you won't need to. For a powerlifting cycle you'd be foolish not to. At least in my opinion.
Scheduled deloads ensure you are prepared for the next me so cycle without compounding neural fatigue. We are talking regularly using higher intensity though
Oh, and I was giving my own deload schedule (from lifts over 90% 1RM). If you're a BBer then deloading is at your own discretion IMO.
As usual, I agree with almost all of what you have posted ITT. (IRT training info mostly)
I am doing mine every 4th week now, I don't prefer it, but I understand why it is necessary with the way my training is being done at this time.
I've done two different ways of choosing my deloads, 1 is just scheduling 2-3 per 12 week training cycle (using a conjugate method of training) and taking them whenever I felt they were needed throughout that training cycle, and the 2nd being what I am doing currently (taking them every 4th week whether I feel I need them or not).
But, the way my training is currently setup, each new training wave has a weight increase that is based upon how well I performed during the final phase of the previous training wave, so by doing the scheduled, preventative deloads I ensure that I am fully recovered when it is time to start the next training wave and allows me to continue to perform each wave at the highest level possible.
Also, as far as training goes, mine is fairly similar to yours (weekly setup).
Mon- Deadlift, Front Squat (5/3/1), Unilateral Lower, Back, Posterior Chain
Tue- Conditioning Work/Core/Speed Development
Wed- Log Press from Rack (push), Log C+P (strict), Vertical Pull/Horizontal Pull, Upper Back, Triceps
Thu- Conditioning/Core/Speed Development
Fri- CG Bench, Axle Inc. Bench (5/3/1), Chest, Shoulders, Biceps
Sat- Events
Sun- Rest
Tuesday and Thursday can be rest days as well if I feel it is necessary, but I typically try to some type of conditioning or speed work (usually with carrying events).
Each wave I have been increasing the volume of each session slightly to improve work capacity, and I typically start each session with some form of low intensity/high volume rear delt work. Recently, I've been considering adding either more chest work on Friday, or adding some chest work on Wednesday (superset with triceps).