Dutch style vs Thai style
One school throws chains of punches ending in a low kick; the other throws single scoring strikes and wins the last two rounds. Both are correct — for their own rulebook.
The Dutch and Thai approaches are usually presented as a matter of taste. They are not. Each is an efficient solution to a different scoring system, and swapping them produces a fighter who loses.
The Dutch style is built on combination chains: hands at head level to lift the guard and load the opponent's weight forward, then the low kick underneath. High volume, constant pressure, pad rounds long enough to make the sequence automatic. It exists because under K-1-derived rules there is no clinch to rest in, judges score each round independently, and volume is what wins rounds.
The Thai style is built on single, clearly scored strikes — the round kick and the teep above all — with visible balance and control, and a pacing structure in which the first round is often a feeling-out period and the last two are where the fight is won. It exists because traditional Thai judging weights the later rounds heavily, treats a fighter who is visibly in control as ahead, and permits the clinch as a place to accumulate.
Run each in the wrong venue and it fails. A Thai fighter pacing themselves through round one under K-1 rules has simply lost that round, with no later-round weighting to recover it. A Dutch fighter throwing high-volume combinations in a Thai stadium looks busy but unbalanced, and busy-but-unbalanced does not score in Bangkok.
The modern hybrid — Dutch pressure with Thai kicking mechanics — is what most European gyms now teach, and it works because most modern promotions score the Dutch way.