In my opinion, I'd rather not have to research the taxi legistlation of countries I visit. Uber provides a globally uniform service at an uniform price, and like it or not, taxis do not.
That's fair, I guess. It seems like a relatively minor point in the grand scheme of cultural differences you will have to deal with whenever you travel somewhere else and I find it hard to relate to the desire for standardisation and uniformity that I notice mostly from people in the tech community, but I'm not going to pretend that variations in taxi legislation are a charming cultural quirk worth preserving, so nothing makes my opinion more valid than yours.