Turn 1 was not a pen man. See the race starts in COTA for every year and there will be atleast one car being pushed wide in turn 1. Hell in 2015 and 2021, the driver in P2 pushed out the pole sitter at T1. In 2017 and 2018, Hamilton conceded the corner and didn’t try to go side by side which is why he was not forced wide. The nature of the track coupled with cars being on cold tyres always leads to that.