The MacBook Pro 16" 2019 earns a 1 out of 10 on our repairability scale (10 is easiest to repair):

The trackpad can still be removed and replaced with very little drama.

Minor components are modular, but the processor, RAM, and flash memory are soldered to the logic board.

Glue and/or rivets secure the keyboard, battery, speakers, and Touch Bar, making those components a tricky fix.

The Touch ID sensor is the power switch and is locked to the logic board, greatly complicating repairs.