For someone that's beyond the novice/intermediate stage, proper assistance exercises around weak points is critical. For example - with the deadlift, if you're slow off the floor and fast at the knees, you may need assistance work like a deficit deadlift, or using 35lb plates instead of 45s - or maybe power cleans to improve your explosiveness. Or, say, a bench presser that's fast off the chest that struggles with a lockout - they could benefit from tricep work, bands/chains, or high boards - something that works on the top of the lift.
No, you don't want to neglect the core lift, of course you continue to do them - but you supplement it with the correct assistance exercises as well.
This is a known aspect of human physiology, and its why the Wilks formula used in powerlifting competitions favors heavier lifters.
Sure - you want to be the heavyweight champ. You want to be the next Ed Coan, Andy Bolton, or Doyle Kennedy. But that doesn't take away from the accomplishments of the lighter lifter. Just like no one would scoff at Flloyd Maywether or Manny Pacquiao, someone judging a powerlifter shouldn't look down on Wade Hooper just because he's a 165er.
If you want the fawning admiration of gym rats, yes, doing the absolute heaviest weights (whether they're legal or not) is the best way to do it. However, you'll note that the title of this thread is "Deeko's powerlifting thread", and I've talked about how these lifts relate to powerlifting in pretty much every response to you. There is no special medal at a powerlifting meet for having the absolute highest total. It goes by weight class and by wilks. Well, its possible that some meets give that award, but its an ancillary prize - the USAPL/IPF don't recognize it.