That sounds like one man’s opinion.
What Apostolic Succession represents is a dated notary’s stamp on the Orthodox Church’s birth certificate. So, we know where the Eternal Father, Son, and Holy Spirit are in fact worshipped and glorified.
Aside from that, the Orthodox Church does not make pronouncements or declarations about where the Lord isn’t.
We’d appreciate it if the other expressions of the Faith would return the favor.
I don’t see the Protestant denominations calling Catholics heretics and withering limbs and fallen away, to be called back to the “true Church”.