interesting
makes me think on all that is needed in the backend to have an updated website to check this things
that's probably why bloomberg got so big
it's interesting to think too on everything that is needed for trading view to have up to date information
I do not completely understand your point of view. Trading view, as you mentioned, gather data from exchanges through APIs and show us the live coins price data. However with the information available on trading view, with all those lagging indicators and sites like Bloomberg, i do not think the gamblers can find much help from them other than finding the things (the lagging data) in a centralized places.
makes sense that they get it from the API
regarding the lags, it'll probably vary from connection to connection and website to website, the thing is that past data won't be enough to try to guess the future, but some techincal analysts can use it and beat the market over time
it's not easy but it is possible to be done.