This means wasting a significant percentage of wind generation is still a net savings. Currently curtailment aka excessive wind production is relatively low percentage of generation, but based on current prices it’s cheaper to build more wind just to offset more natural gas use.
You end up needing to pay for the generators either way. So, currently the breakpoint ends up being when 1/2 of all wind power is wasted resulting in 2 x 10$/MWh your at breakeven with fuel costing $20/MW-hr.
However, current natural gas prices are market driven. Reduced demand will lower prices, but that’s still a net win for power companies. In the coming years as new wind power comes online the economic situation will change, but for now massive investments look like a very good deal.