Fundamental analysis attempts to "read the future" by considering various factors that may or may not affect price changes. Interest rates are a classic example: they're often said to have a reverse-proportional effect on price — when rates go up, prices go down, and vice versa. The last crash showed that isn't always true. And that's the problem with all fundamental analysis: the relationships are inconsistent and unreliable.
Technical analysis takes only the data of existing, recent, and historical sales and derives trend lines that give reliable, irrefutable guidance to the market's next move. It reads what the market is actually doing rather than guessing which fundamentals will matter this time.
On the new platform, TA is what powers the Market Outlook Score and the S.T.A.R. / T.A.P.S. / Wealth Phase studies — so you're acting on the price action itself, not on a fundamental theory that may or may not hold.