You cant ignore 10 goals and 6 assists in the PL, especially as they came in one of the worst teams, Richarlison was 10 goals and 5 assists and 3 were penalties. He also comes with a pedigree - his CL stuff is impressive, clearly a talent there both in previous history and current evidence, anecdotally full tilt he looks a player. I wouldn't dismiss the reported attitude problems, but i see Moyes is also interested and he is notoriously a stickler for attitude.
Looking at it, he got annoyed for being pulled over for speeding - hes a young black man, so who knows what went on there or what was going on in his mind. He left the bus over a seat, seemed Covid was at play there. His brother died amongst all of that, certainly grief can send any of us into a tailspin of coping and cause any of us to make mistakes, we're all human.
Im open minded on the lid, ive liked what ive seen and i think Lampard is a good man manager and manages with clear boundaries but also has good relationships with his players. I want this lad to play football successfully, not to babysit kids, so id have a open minded approach on attitude with clear red lines, but i think there is context here, its a risk Vs reward thing.