Yes, there are definitely people who argue that performance never matters.
And the research Facebook (and others) have done clearly shows that a half–second loading time on a webpage loses them a lot of money. So much money that they were willing to have dozens to hundreds of engineers work for years to fix it across all of their apps and their web servers and apis. Presumably it costs a small–time business a similar percentage, but if that’s not enough money to justify paying a developer to fix the problem then by all means spend the money elsewhere.
And the research Facebook (and others) have done clearly shows that a half–second loading time on a webpage loses them a lot of money. So much money that they were willing to have dozens to hundreds of engineers work for years to fix it across all of their apps and their web servers and apis. Presumably it costs a small–time business a similar percentage, but if that’s not enough money to justify paying a developer to fix the problem then by all means spend the money elsewhere.