Weird. I've lifted on and off for 25 years. For most of that time I did the stereotypical 3x8-12 and saw much slower progression. During the past couple years I switched to a 5x5 plan and saw massive gains in strength, even while I was cutting weight via a caloric deficit (was eating 1500-1600 calories a day, but had lots of protein and adequate carbs).

For reference, I went from a dumbbell bench press of 45lb to 75lb in 4.5 months (5x5). Previously my progress was much slower.

I'll caveat that I've obviously not closely controlled for all factors and I'm an n of 1. Additionally my interest is in having a great strength to weight ratio, rather than being a body builder. I'm a climber and that's an important consideration.