"Professor Pennington said that placing created an ideal environment for the spread of bugs." but you don't put them in all together into a plastic bowl! For one thing, there wouldn't be enough room in the plastic bowl for all the items used in preparing, cooking and eating a meal!
If it can go into the dishwasher it does. That leaves the good glasses that would be spoilt in the machine, any plastic bowls or jugs that have been used for preparation and and are so light that they would fly around in the machine, and any pots and pans that are too big for the machine plus large chopping boards. (small plastic chopping boards go in the dishwasher)
I wash glasses first and dunk them briefly into rinsing water before drying them or putting them to drain, then plastic bowls etc, and chopping boards.
Even before I had a dishwasher, I would never have put "chopping boards and knives teeming with germs together with plates and glasses in a plastic bowl"
The cleanest things are handwashed first, the dirtiest and most likely to contaminate are washed last, and the hot soapy water is changed when it gets mucky or greasy. Things are rinsed either as each is washed, or several things at a time. Thee is no chance for the bacteria on, say, raw meat to contaminate glassware or crockery or cutlery.