Baseload is 40%.
Windenergy percentage is about 20% of TOTAL energy.
A quarter of 40% baselaod is 10% (of total energy).
Simple math: half of the wind energy (10% of total) is used for a quarter of baseload (40%), the rest is just fed into the grid as it is available.
(Picking your numbers and applying them correctly).
The rest of your post is mixing up half true and half wrong histories and drawign wrong conclusions from that.