I know the FP2 well, and frankly the FP5 is in quite another class. It’s fast (enough for me anyway, though not a gamer’s phone of course), smooth and stable.
USB port is USB-C of course, much more robust, and the replacement module, if ever you need one, is very small.
Known problems are conveniently listed (and followed up) here:
But I regret the size and weight of the FP2 which slipped into a pocket a lot more discretely than its successors.