I too think AI is a bubble, and besides the way this recklessness could crash the US economy, there's many other points of criticism to what and how AI is being developed.
But I also understand this is a design and web development company. They're not refusing contracts to build AI that will take people's jobs, or violate copyright, or be used in weapons. They're refusing product marketing contracts; advertising websites, essentially.
This is similar to a bakery next to the OpenAI offices refusing to bake cakes for them. I'll respect the decision, sure, but it very much is an inconsequential self-inflicted wound. It's more amoral to fully pay your federal taxes if you live in the USA for example, considering a good chunk are ultimately used for war, the CIA, NSA, etc, but nobody judges an average US-resident for paying them.