I love Thinkpads and have a few, but this depends on a model.
Some Thinkpads, more specifically x2xx series (ie x250 - x290) require removing all internals to get to the keyboard to replace it (batteries, storage, wifi, motherboard, speakers, CMOS battery, and a few others). Dell Latitude E5470 on the other hand allows replacing its keyboard by pulling out a small plastic panel and removing one screw.
Some Thinkpads, more specifically x2xx series (ie x250 - x290) require removing all internals to get to the keyboard to replace it (batteries, storage, wifi, motherboard, speakers, CMOS battery, and a few others). Dell Latitude E5470 on the other hand allows replacing its keyboard by pulling out a small plastic panel and removing one screw.