What criticisms of Muhammad are commonly cited by Muslim converts to Christianity?

Emil Shehadeh was born in Israel and educated mainly in the UK, achieving BSc Hons (Medical Biology), MSc (Biochemistry), MB ChB (Medicine), and a Diploma in Dermatology and MRCGP. Upon retirement, he dedicated his time to writing and speaking on the subject of Islam and evangelising Muslims. Emil has a PhD in Islamic Studies from Logos University and is engaged in another piece of research at LST, Northwood, on the Causes and Consequences of Muslim Conversions to Christianity. Here, Emil answers questions from the talk "Why Muslims Become Christians", given at the 2024 European Leadership Forum.