No worries but to be clear, do you stand by your opinion for old bikes? The ones I maintain are decades old and those 5 minutes I mentioned easily turn into 30 minutes at times because of brakes and guards working together against me. I've always considered that time to be the price to pay to have a cheap, undesirable (to thieves) bike and your estimate is challenging my world views!

Regarding tire removal, I recently did it like three times in a single week. It was like 15 minutes in sweat and finger pain every time. To get an idea of what one can achieve, can you remove a tire without tools with fat tires only or even thin road tires? Mine were thin, 23mm (less than an inch). By the way, in this instance, it wasn't a beater but a high-end 1970s bike.

Thanks for the advice, I'll look into it because it sounds like I'm missing something.