See the guy on their demo page [0]? He's a fictional character [1] on the HBO show Silicon Valley [2].

[0]: https://bighead.sievehq.com/

[1]: http://silicon-valley.wikia.com/wiki/Big_Head

[2]: https://en.wikipedia.org/wiki/Silicon_Valley_(TV_series)

Using copyrighted photos for commercial purposes without permission will bring in some nasty letters from lawyers (demands for takedown, demands for payment, etc.)

And to a potential customer, it indicates a lack of basic trustworthiness - if someone is unaware of or uncaring of the basic laws about copyright, should I trust them with my credit card number?

A character from the HBO show "Silicon Valley", I believe.