How many here remember your cars or trucks having manual chokes? I do. I learned to drive in a 52 GMC 3/4 ton farm truck with a 4 speed manual. Starting routine: Make sure trans is in neutral, turn key on, pull choke half way out keeping choke knob in hand, press floorboard mounted starter button to engage starter, balance choke with throttle until the 300ci six fired, add a little more gas to keep the idle high, let engine warm for a minute and start easing choke in finally fully open at operating temp and a good idle. Drop into granny gear and head off to the field.
Problem now is that manual chokes haven't been around for 60 years and most drivers today have not been exposed to them. I can understand some youngster new to old bikes not knowing or forgetting the proper start sequence. They just don't have it ingrained in their mind or driving habits.