Which bit of #5. The author makes five claims.
Looking at post #55 above:
The first claim is no longer relevant. There was a slight technical change to the definition of misleading, but because Johnson was found to have deliberately misled, that is no longer an issue.
The second claim is that a lower standard of proof ("on the balance of probabilities") was used than in some other cases. The evidence above seems pretty overwhelming, though. I don't think a slightly higher standard of proof would have helped Johnson.
The third claim is that some witnesses were kept secret. But that doesn't seem to be true. The author seems to be mistaken, here.
The fourth claim is that Boris should have been able to have his lawyer speak for him at the hearing. Would that have helped in this case. Would he have denied being there for ten minutes, which is the crucial point?
The final claim is that Boris/lawyer should have been able to cross examine the witnesses. That's the most interesting one, I think. If his lawyer had been able to question them, what would have happened. These are inquisitorial proceedings not adversarial ones. I don't know how that fits with cross-examining witnesses, But on the face of it, I agree it seems unfair.