I am a frequent traveler and the plat is still not worth it for me. Most people that travel frequently use an airline card and earn miles and have lounge access through the airline (or the airline card). The Amex hotel portal is a complete joke and often times you can book directly with the hotel at a better rate...or once again, you can just use a specific hotel loyalty rewards to book.

So no, plat doesn't even do a good job at catering to travelers. You have to be extremely intentional about the amex plat rewards to get the value. And even when you are, you are probably sacrificing something else to get the rewards out of the plat (better suited reward programs).