Quality, yes. Extremely compact, no.

Something like the Anker Prime 100W GaN charger is far more compact than any charger Apple has shipped.

Now, granted, many compact chargers lie about how long they can provide sustained power. That's exactly what this "dynamic" charger is doing, except that it's being more up-front about the fact that it's not a 60W charger, it's a "60W until it's inevitably too hot" charger.