If I'm not mistaken, this was in 2016 (that's 10 years next year, time flies when you're having fun) -- which is practically an eternity in IT. I'm no DBA but I'm fairly sure many changes have been made to Postgres since then, including logical replication (which can be selective), parallel apply of large transactions in v16, and so on.

I'm not saying this means their points are invalid, I don't know Postgres well enough for that, but any point made almost 10 years ago against one of the most popular and most actively developed options in its field should probably be taken with a pinch of salt.