Summary
The main component of the Texas problem was the inability of conventional generation to deliver when the wind fell off. Predictions of future windpower are becoming highly reliable, even up to 30 hours. The Texas drop off was as predicted, but backup plants failed. Further, the entire US grid has reliability problems completely unrelated to windpower.
Analysis
With grid penetration levels above 20% throughout vast areas of northern Europe, there has never been any serious problems for grid operation. The largest utility, E.on, always brought up potential problems in justifying attempting to stymie wind development. But they turned completely around based upon their own studies of their own operations. They are currently investing billions in windpower. Does that suffice to answer the question?
There will have to be a far greater incursion of windpower in the US from the current less than 1% (3% in Texas) before grid operation must adjust. It's usually better to base investment decisions upon fact-based due diligence, than ungrounded opinion and rumor. BP recently added another framework purchase of wind turbines, for example.
