Lumens, not Watts.
The technological “generational change” of course meant a sort of “arms race” on the market of LED light sources. Producers tried to compete by raising various parameters of their products.
At the beginning, light-emitting diodes (LED) were offered in light sources of very low power, 1-2 watts, but soon manufacturers began racing to increase their capabilities. When it turned out that increasing the wattage was a dead-end street, as more important was the amount of emitted light as expressed in Lumens, the next step was rivalry to obtain the highest amount of Lumens possible.
Many producers concentrated on increasing this parameter at the cost of others (e.g. proper cooling), which had an effect on the quality and durability of products. It also occurs that offered products do not actually meet the parameters declared by the producer, and their only advantage is low price.