Thinkpads are in the same boat. I have a T470s, which at it's thickest point is 1.8cm when closed (it tapers down to 1.6cm) and weighs 1.3kg.
The other day I upgraded the NVMe drive, which involved unscrewing 5 screws on the back cover (they don't remove completely, so you can't lose them), pulling it off, then removing the screw securing the drive in place, pulling out the drive, then doing the same in reverse to put it back together. I didn't even need any fancy head, just a standard Philips screwdriver is fine.
If any parts break it's easy to get replacements and perform the work (Lenovo provide lists of part numbers and instructions). Oh and the modification I did will not affect my on-site warranty in any way.
I admire Apple for some of their work, but it just seems like they are shooting themselves in the foot with the lack of repairability and overpriced hardware. I used to be a die hard Apple fan, but the hardware they have released in the last few years has just put me off - now I don't own any Apple products.