As a rule, the weight specifications of good wall mounts (such as Vogels...) are always kept very low on purpose and still have sufficient reserves. In other words, it is quite likely that you will be able to easily mount a 30 kg screen here. The main tension pushes the screws downwards and not forwards. So just make sure that you choose screws that are long enough, then you are safe anyway.
However, the manufacturer cannot "guarantee" you a higher weight, so if, contrary to expectations, the part still comes down, you cannot fall back on Vogels.