a && a.b && a.b.c is more concisely written as a?.b?.c. The optional-chain operator (?.) short-circuits on null/undefined. The check flags lhs && rhs where the LHS is a "safe to repeat" expression (identifier, this, or a pure member chain — never contains a CallExpression or NewExpression) and the RHS is a member access (or call on a member access) whose object span renders to the same source bytes as the LHS span.

// flagged
return user && user.profile;
return user && user.profile && user.profile.name;
return arr && arr[0];

// fix
return user?.profile;
return user?.profile?.name;
return arr?.[0];

// not flagged (LHS is a call — rewriting would halve the call count)
return get() && get().profile;