Priority Pass has been a huge letdown so far. I think most lounges have been inundated with the travel rebound as I've been denied entry to multiple lounges due to capacity. KLM lounge at IAH told me they've just stopped accepting Priority Pass guests entirely, even though it's still on the PP website. At least with the Platinum you can always visit a Centurion lounge, which are typically very nice.
The Priority Pass restaurant restaurant voucher, however, is actually pretty incredible if you frequent an airport with a participating restaurant. It's a $28 daily credit so you can pretty much eat for free (and usually pretty good food for an airport). The only downside is the AMEX Platinum does not include the restaurant voucher, just Priority Pass lounge access, so you'd have to get the Chase Sapphire Reserve for that.