Seriously I am not surprised about Coinbase actually telling people to move their bitcoin to the exchange and saying that wallet isn’t secure enough,
To clarify, these are not employees. They are just coinbase fanboys.
You can't get the best knowledge about Bitcoin and crypto on any other forum except Bitcointalk, no sub board on reddit teaches the right information about crypto except those replies are from a scammer trying to lure people into hitting their inbox and ask them what next to do so they scam them.
Reddit are for beginners and newbies that has no knowledge about anything crypto. In fact, any crypto related sub board on reddit are solely for scammers out there, they may be acting like coinbase fanboys as you said but they are not.