Point is that justifying and evaluating this is hard. Like really hard. It is especially hurtful to younger / less experienced people because if you have not be

Point is that justifying and evaluating this is hard. Like really hard. It is especially hurtful to younger / less experienced people because if you have not been in the business for long, you don't know enough dynamics and factors and costs etc and you just might make the wrong decision. It's all speculation (much like advertisement, I agree). But as much as we hate advertising industry because of their data collection practices and stuff, they do provide you a metric in return while this doesn't.