Yeah but for those not using £20 phones from Tesco, where is the disrespect?
If your website takes more than 3 seconds to load on the free Metro Wi-Fi, I'll go back to my search and pick a different page. If it takes more than 3 seconds to load on gigabit on a PC, I'll remember it and never click on links to it again.
If you don't respect my devices, then your work doesn't deserve my respect.
(Don't get me started on people calling themselves software _engineers_)