Your argument is like saying both/and is better than either/or, except one must use either/or to claim both/and are better. When news cycles hit, based on the DD, the fundamental value of a company we make the determination that in the overhang of the news a company is either under or over-valued. We then look at the technicals even if people are mindlessly bolting for the doors. When you place a trade, any trade, you need to know a value to buy or sell at and that value is best based on technicals.
At best what we can say is that every market is in a constant action of discovery and as a result, likes news. As news is clearer and clearer the more accurate pricing may become. For example, I think it obvious that the markets will take another leg down and today's current relief rally will fizzle and fade and I'll get stopped out again at a profit as news of the coronavirus spreads.