The first legally parked car in that pic is the grey Yaris. Loading doesn't include picking up or setting down passengers.
Sounds like you joined the wrong service

Most of the shockingly rubbish taxi drivers that I have encountered are the London Private Hire drivers, sitting at 50 in the middle lane of a near empty motorway, using sidelights and front fogs because they can't be bothered to turn the headlight switch another notch, always in the wrong lane etc etc.
And of course you never see fire engines illegally parked outside KFC, or the chinese.
All these faults you have issue with are constantly displayed by a wide cross section of people. Some of whom genuinely couldn't give a rats nostril about what they do, how they do it or the implications of their actions. But alot by decent individuals going about their lives, unaware that they have transgressed. Some people, and I consider myself in this group, take a genuine pride in most of what they do, and strive to do it well, but no one is perfect.
Not every cab driver is a ignorant-rta-in-waiting, not every lorry driver is a prostitute-murdering-watching-telly-whilst-driving-psychopath, not all firemen work second jobs on their rest days, not all coppers are arrogant power crazed bullies, not all MPs are bad people.
If you have a genuine greivance with the behaviour of your local cab drivers, then collect the evidence and present it to the licencing officer and the local plod, but please don't just sit and judge.
At risk of misquoting, " Don't judge another man without first walking a mile in his shoes..." this is good for two reasons. Firstly, you will be a mile away, but, secondly and more importantly, you will have a real understanding of their perspective.