There aren't any taxi token requirements or anything unreasonable. Can't wait to see what the usual Uber shills have to say about why they can't abide by a couple basic rules.
I've no doubt a few libertarians will chime in how it's intolerable government interference to require car insurance.
I'm a little-'l' libertarian and I think simple, reasonable, easily-understood regulations like this are not only perfectly acceptable, but highly desirable. As a libertarian I want minimal government. A government that does not provide reasonable regulations is less than minimal and therefore a failure. Minimal is "greater than nothing", you see, and something greater than nothing but still less than minimal is ... still a failure. I can't break it down any more simply than that.
I've never actually met or corresponded with an anarcho-capitalist who called themselves a "libertarian" (which is what you and so many others are ignorantly assuming to be representative of libertarian thought), though I have corresponded with multiple anarcho-capitalists who called themselves "anarchists" or "anarcho-capitalists". Their ideas were interesting to be sure, but just like communism, seemed designed for a species other than our own. That's why I don't count myself among them.
The problem here is that your standard "progressive" and "conservative" political schools of thought have millions of members and powerful parties backing them. That means they have great PR. Both would be quite threatened if reasonable libertarian thought really caught on. It's not exactly shocking that reasonable libertarian thought is seldom portrayed, except by individuals like me. Of course it will be distorted, misrepresented, and shown in only its most extreme and unworkable forms, until the average person finds it distasteful like an automatic reflex. Like I said, it's called PR, and it's quite common in politics. It only works because it depends on your ignorance.