There are plenty of Panerai watches using in-house movements these days. I'm a bit of a movement snob myself, but there are loads of ETA, Valjoux, etc-based watches I admire and desire. And, for what it's worth, Panerai historically was a casemaker, using externally-supplied movements, so there is actually plenty of historical precedent for the use of outsourced movements in these watches. I'm not saying that spending $6K on a watch with a simple Unitas movement makes good economical sense, but since when did any aspect of this hobby make any sense?
Now, when Panerai throws a nice in-house movement in something that looks like this...well I guess I'm a fanboy, and yes, I'm smitten.
FWIW, the "in-house" movement (in the Richemnt house, I guess) are a relatively recent phenomenon for Panerai and mostly a marketing strategy to increase prices and ensure continuity if/when Swatch Group continues to make ebauches less accessible to third parties.
In reality, outsourced movements are much more aligned with Panerai's history and DNA. OP was primarily a case and dial maker and sourced Rolex and Angelus movements. It never was or claimed to be in the horology business but rather a maker of tools for the marina militare, among which this new design of watch case, luminous dial, and, later, crown protector to ensure better water resistance. When Vendome bought the "modern OP" in the late 90's, they had revived old watch designs but replicated the same approach as OP did decades before: focus on the case and dial and use readily available movements. Vendome continued that, incorporating a number or specialty movements here and there for Ltd Editions, but always sourced.
Yes I'm aware of Panerai's history of using outsourced movements. I'm not against Panerai using outsourced movements, I'm opposed to them using ordinary or rather inexpensive movements, and then charging a lot for their watches. Please understand that I am not opposed to spending good money on a watch with an outsourced movement (I have a Cartier Tank XL with a Piaget movement and a Rolex Daytona that used a Zenith El Primero as a base). Outsourced movements have been used in many of the finest brands including Patek, AP, and VC.
What I am opposed to is spending a lot of money on a watch say $6K on a Panerai knowing that the same base Unitas movement or ETA movement is sitting in my friend's $700 watch. If the PAM was say $2K and it used a movement that is found in watches that are $700-$,1000 well its more understandable at the price point. At more than $5K its a tough pill to swallow. Also, I've seen the movements in the base PAM, they do some work on it but just not enough to really differentiate it from the the base movement or justify its price. However, as long as people buy the models that have ordinary movements in them Panerai will continue to use them.
Also if you read the last sentence of my eariler post I said "My big wish for Panerai is more in house movements or the use of movements from finer companies such as F.Piguet, JLC (since its under the same ownership), maybe Zenith...rather than using Unitas, Valjoux etc." So I'm not saying they have to use only in house movements, I wish that their outsourced movements were movements that from what are considered finer movement makers and movements that I will not be seeing in $700-$1,000 dollar watches.
There is nothing wrong with a watch that used an ETA or Valjoux movment. Afterall, they will get the job done and if you are satisfied with the end product thats all that matters at the end of the day. However, when putting a good some of money into a watch, I'd prefer that it didn't use an ordinary movement once the watch is in a certain price range. YMMV.