Earlier quoted context omitted.
Be careful when getting irate about aledged "Health & Safety" or "Ecological" oe other money wasting. The facts are often different than they first appear: https://jeffollerton.co.uk/2025/01/31/no-the-hs2-bat-tunnel-...
I read your link and it does not support your view that the facts are different than they appear. He calculates a bit differently (including not just currently living bats but those bats yet unborn) but still I feel the tunnel was not necessary
It's a distraction technique as old as the hills, and implies the blame for the missing 100b is because of bat boxes, while others run off with the remaining 99b.