"Good" content without data is unsubstantiated content.

Data to provide evidence of performance objectively evaluates products, benefiting everyone. For example, show me who has been verifying the quality and performance claims of computer power supplies without equipment such as LTT labs.

If you want to be reductive about it - technology and their gadgets are valuable for the audience, but not strictly necessary.

The original point in this thread was that the lab isn't necessary for LTT to produce their content as they successfully appeal to a large audience either way. Which is obviously true, given the lab did not exist for most of the channel's lifetime and growth.

You argue that it's beneficial for informing the consumer. It is, but no one here disagreed with that.