85%
True

He kicked out his predecessor, and then lost 39 MPs at the next election.

The SNP fell from 48 seats at the 2019 general election to 9 seats at the 2024 general election, a net loss of exactly 39 MPs. Stephen Flynn became SNP Westminster leader in December 2022 after replacing Ian Blackford, so the figure of 39 lost seats at the subsequent election is accurate.
Checked Wed 1 Jul, 09:53 · Broadcast: PMQs: Prime Minister's Questions - 29 April 2026

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