You answered it yourself
The main reason is that it is too much work. If you add up the total volume (the 8x3 and the M.E. sets) it would be too much tonnage. Also, the point of Westside is to work on your weak points. You do this with assistance exercises and M.E. lifts. If you do dynamic on...
Max Effort bench day
Hello. I am a newbie here but a long time Westside "follower".
Hannibal is absolutely 100%. You should also miss your last attempt (have a spotter or pins). It is ok to miss, the most important thing is that you strain.